(a) (1) State similar characteristics between the sea teak leaf and the weeping willow leaf
(11) State one structural difference between the sea teak leaf and the weeping willow leaf
1. Answer:
Both these leaves are quite similar because of their physical appearance. The sea teak leaf and weeping willow leaf are narrow and elongated. However, a weeping willow leaf has tapered edges.
The scientific names of sea teak and weeping willow plants are Podocarpus polystachyus and Salix babylonica.
The leaves of both these plants are simple regardless of their receptive compound appearance. This is due to the presence of complex vein structure on the leaf.
2. Answer:
There many differences between sea teak leaf and weeping willow leaf.
Sea teak leaf is 3-10 cm long while weeping willow leaf is only 6 cm long.
Sea teak leaves are bright green and shiny while weeping willow leaves are green at top and white at the bottom.
The bark of weeping willow can be used to obtain various medicines. Meanwhile, the leaves of sea teak plants are chewed to ease pain of joints.
Weeping willow trees are found in areas of China, South-West Asia and Europe.
Sea Teak trees are found in Indonesia, Malaysia etc.
How could genetic engineering be used to produce a more successful crop in a hot,
dry climate?
Non-essential DNA could be removed from the genomes of the crop plants.
ODNA from plants adapted to dry areas could be added to the genomes of the
crop plants.
RNA from a variety of nonagricultural plants could be added to the genomes of
the crop plants.
OmRNA transcripts of genes from dry weather crops could be added to the
fertilizer used on the crop plants.
Answer:
the first paragrapgh
Explanation:
hope this helps
Final answer:
Genetic engineering in agriculture can involve adding DNA from drought-resistant plants to crop plants, enhancing photosynthesis efficiency, and enabling nitrogen fixation in crops to produce more successful yields in hot, dry climates.
Explanation:
Genetic engineering could be used to produce a more successful crop in a hot, dry climate by adding DNA from plants that are naturally adapted to such conditions into the genomes of crop plants. This process, known as transformation, involves a targeted addition of foreign genes or transgenes into the genome of an organism, which can confer beneficial traits like drought resistance. The new genes could enable the modified crop to withstand extreme climate conditions more effectively, leading to improved crop yields and sustainable agriculture.
One promising application of genetic engineering in agriculture is the modification of photosynthesis efficiency. By using recombinant DNA techniques to double the efficiency of photosynthesis, a significant increase in food and biomass production could be achieved. Moreover, developing the capability for crops like corn, rice, wheat, and cotton to support nitrogen-fixing bacteria would drastically reduce the reliance on synthetic ammonia production, saving energy and natural resources.
Select the correct answer.
Which statement is an example of parasitism?
A.
Psuedoscorpions hide under beetles' wings for protection and transport.
OB. Wasps lay eggs inside hornworms and after the eggs hatch, the wasp larvae feed on the hornworm.
OC. Lions and hyenas live in a savanna ecosystem and eat the same prey, antelopes.
OD.Otters contribute to a high level of diversity in their ecosystem because they eat urchins, allowing kelp to grow.
OE Ladybugs consume insects such as aphids, mealyworms, and spider mites.
Answer:
B
Explanation:
The larvae feeding on the hornworm harms it.
The statement is an example of parasitism is B. Wasps lay eggs inside hornworms and after the eggs hatch, the wasp larvae feed on the hornworm.
Here's a detailed explanation of parasitism:
Parasitism is a type of symbiotic relationship between two different organisms where one organism, the parasite, lives on or in the host organism, causing it some harm, and is adapted structurally to this way of life. The parasite benefits at the expense of the host.
In the example given (Option B), the wasps are the parasites. They lay their eggs inside hornworms. Once the eggs hatch, the larvae feed on the living hornworm, which eventually leads to the hornworm's death. This relationship benefits the wasp (providing nourishment and a place for its larvae to develop) while harming the hornworm, which is a classic example of parasitism.
Which statement best distinguishes carbon dioxide from carbon monoxide?
Answer:
Carbon monoxide and carbon dioxide are both colorless and odorless gases. Carbon monoxide has a molecular formula of CO while carbon dioxide is CO2. Carbon monoxide is composed of one carbon atom and one oxygen atom while carbon dioxide is composed of one carbon atom and two oxygen atoms
Explanation:
how do waves impact shorelines?
what is the relationship between mutation, natural seleection, and adaptation
the structure of DNA's bases are held together by what type of chemical bond?
Answer: its not a chemical bonds. It is a hydrogen bond or LDF in chemistry
Water stored in sediments and rocks beneath Earth’s surface is called
a. underground
b. run off
c. ground water
d. water table
Which describes an interaction in which organisms work together so that all organisms in the group benefit?
Answer:
Mutualism
Explanation:
Why do more cancer deaths (as a percentage of population) occur in the U.S. than in poor regions of Africa or Asia?
Select one:
a. pollution is worse is the U.S.
b. the population is more mixed than in most nations
c. the population tends to be older in the U.S.
d. there is more radiation in the U.S. from bomb testing
Answer:
D
Explanation:
There is more radiation in the US from bomb testing
Final answer:
The main reason for more cancer deaths in the U.S. compared to poor regions of Africa or Asia is the older population in the U.S. Higher life expectancy and lifestyle factors like smoking contribute to a higher incidence of cancer. So the correct option is c.
Explanation:
The correct answer to the question of why more cancer deaths occur in the U.S. as a percentage of the population than in poor regions of Africa or Asia is c. The population tends to be older in the U.S. This is because cancer is generally a disease associated with aging. The United States, along with other higher-income countries, has a relatively older population due to better overall healthcare and higher life expectancy. As a result, there are more people in the age group who are at a higher risk of developing cancer. Additionally, cancer patterns are influenced by cultural behaviors such as smoking and dietary practices, which are prevalent in the U.S., leading to a higher incidence of cancer-related deaths.
While pollution, a mixed population, and radiation could contribute to cancer rates, they are not the primary reasons for the higher percentage of cancer deaths in the U.S. When considering environmental factors, it's important to note that although poorer regions might face high levels of environmental pollution and related health risks, the younger demographic and issues like infectious diseases often overshadow the impact of cancer in those areas.
HELP!!!!!!
I don’t understand what to do. If you can please explain but just giving the answers would be fine.
Answer:
1.) heterozygous 2.) hairy 3.) hh 4.) heterozygous 5.) no fur | as for 5, 6, and 7 i need more information because you can't see the guinea pig. number 6 could either be "HH" or "hh" depending on what it looks like, since it's heterozygous. The punnet square on the bottom right goes as follows, (from left to right) HH, Hh, hH, hh.
The given table regarding Guinea Pigs can be completed employing the correct words would be as follows:
1). heterozygous 2.) hairy
3.) hh 4). heterozygous
5). 6). 7). Image missing.
What are Monohybrids?Monohybrids are described as the species that exemplify the hybrid species that are different just due to the difference of one gene.
The Guinea pig belongs to the heterozygous group because it involves two varied alleles of a particular gene.
Based on the given pictures, the blanks 1 to 4 can be filled but for 5th, image is missing, and thus, the Guinea pig being heterozygous, the genes can vary from HH, hh, to HH, Hh, hH.
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Which organism's ancestors diverged first?
The organism labelled 2 diverged first.
The correct answer is option b.
Explanation:
The arrows in the diagram indicates the timeline. The branching point shows the event of divergence in a species.
From the diagram the divergence or internal node is shown at point C.
At point C, 2 and 3 are the new species. C is the recent ancestor of the species 2 and 3.
The ancestors of organism 2 diverged first because the timeline is also short in case of species 2.
the C internode or recent ancestor diverged in to 2 different species 2 and 3.
In tooth fairies, curved wings are dominant over straight wings. If a homozygous recessive tooth fairy has 4 children, and half of them have straight wings...
Answer:
a.) Gene= Wings
b.) Alleles= C,S
c.) Mother's Genotype= SS
d.) Genotype of her tooth fairy husband= CS
e.) Genotype of the other 2 children= CS
Explanation:
Complete question
In tooth fairies, curved wings are dominant over straight wings. If a homozygous recessive tooth fairy has 4 children, and half of them have straight wings
a.) Gene=
b.) Alleles=
c.) Mother's Genotype=
d.) Genotype of her tooth fairy husband=
e.) Genotype of the other 2 children=
Solution -
Here the allele being talked about is the wing type
Thus gene = wing
Let the allele for curved wings be represented by "C"
and the allele for straight wings be represented by "S"
Thus, allele are C and S
Genotype of mother -
Genotype of father is CS
and genotype of mother is SS
CS * SS
CS, CS, SS, SS
Only SS will have straight wings.
Genotype of her tooth fairy husband= CS
Genotype of other two children - CS
The inheritance of curved vs. straight wings in tooth fairies follows Mendelian genetics, where a homozygous recessive parent and a heterozygous parent can produce offspring with a 1:1 ratio of the traits. This is analogous to fruit fly genetics studies, which also relate to human X-linked genetic traits, where heterozygous females pass on traits or carrier status to their children.
Explanation:The question is asking about the inheritance of wing shape in tooth fairies, which involve basic genetics principles. In this scenario, a homozygous recessive tooth fairy produces offspring with a 1:1 ratio of curved to straight wings. Given that curved wings are dominant, the only way for half of the offspring to have straight wings is if the other parent is heterozygous, carrying one dominant and one recessive allele for wing shape. This is an example of Mendelian inheritance patterns, where each parent contributes one allele for a trait to their offspring. This pattern of inheritance is similar to discoveries made in fruit fly genetics which also apply to human genetics, particularly regarding X-linked traits.
For X-linked traits, similar principles apply. For instance, if a female parent is homozygous for a recessive X-linked trait, she will pass it on to 100 percent of her sons, as males only receive one X chromosome from their mother and a Y chromosome from their father. If a mother is heterozygous for an X-linked trait, she will pass on the trait to 50 percent of her male offspring and carrier status to 50 percent of her female offspring, since females have two X chromosomes.
Each enzyme only has 1 substrate that will fit its active site what is it called
Answer:
Enzyme specificity or specific
Explanation:
Enzymes are highly specific to substrates as they have an active site which only allow certain substrates to bind to the active site. This is due to the shape of the active site and any other substrates cannot bind to the active site.
there is a model which is well known in the biology field of the lock and key model. this is because you have to have the correct key to insert it into the lock. this goes the same as an enzymes active site and the substrate.
Enzyme specificity refers to the fact that each enzyme can only bind to and interact with one specific substrate.
Explanation:Enzymes are specialized proteins that catalyze specific chemical reactions in the body. Each enzyme has an active site that is uniquely shaped to accommodate a specific substrate, which is the molecule on which the enzyme acts. This specificity ensures that enzymes only bind to and interact with their specific substrates, allowing them to carry out their specific functions effectively.
Thus, Enzyme specificity refers to the ability of an enzyme to recognize and bind specifically to a particular substrate or type of molecule, catalyzing a specific chemical reaction while excluding others. This specificity is crucial for the proper functioning of biological processes.
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What is the current theory about the formation of the solar system?
A big bang occurred in the solar system as a result of a fusion reaction. All the matter in the solar system that had been clumped together was shattered and sent flying. As new pieces of matter connected, all the celestial bodies of the solar system were formed.
The solar system began as a cloud of dust and gas that condensed, forming a bulging middle and an outer disk. The bulging middle of the cloud became the sun, and the rest of the dust and gas formed the planets, orbiting the sun in the same plane.
About 14 billion years ago, several supernova events scattered all the known elements throughout the galaxy. The magnetic elements were attracted to each other and formed the early celestial bodies that eventually became the planets of the solar system.
The area of the universe that was to become the solar system went through a period of vast expansion as a result of rapid radioactive decay that left behind clouds of dust and gases. The excess clouds and gases were used to form the various parts of the solar system.
Answer:
The answer is A.The big bang occurred in the solar system as a result of a fusion reaction. All the matter in the solar system that had been clumped together was shattered and sent flying. As new pieces of matter connected, all the celestial bodies of the solar system were formed.
Explanation:
I took the test
Distance runners include aerobic training as part of preparation for races. How does this impact their cellular respiration?
Answer and Explanation:
Running or jogging comes under the category of aerobic training/exercise. By definition, aerobic exercise means that the person is training her/his body in the presence of excessive oxygen. So, metabolically speaking, the person is relying on availability of oxygen to carry out metabolism which is mainly about production/supply of energy (ATP) by the breakdown of food in the presence of oxygen. This process is also known as cellular respiration. So, if a person is doing aerobic exercise (running), s/he needs more energy to keep doing the exercise. Typically, aerobic exercise produce more energy (32 molecules of ATP) as compared to anaerobic process (2 molecules of ATP) per reaction run. Thus, In the process of aerobic exercise, the lungs will respire faster to allow more diffusion of oxygen in the blood. Then, this oxygen will be transported to all body by heart pumping and then oxygen enters the cells. Once oxygen is entered, it acts as terminal electron acceptor in a process known as oxidative phosphorylation. This process takes plance in the mitochondria and produces 32 molecules of ATP per reaction.
15
Directions: Select the correct entries in the table.
The nucleotide sequences of four species are shown in the table below. Select the nucleotide sequences of the two species that
are most closely related.
Species Nucleotide sequence of gene ABX
TAC ATA CGC GGG ACC TTT AGT GGG GCC CCC ACT
TAC ATA CCC CCG ACC TAT CGC GGG GCG CCC ACT
TAC ATA CCC CCG ACC TTT CGC GGG GCG CCC ACT
TAC ATA CGG GGG AAA TTT CGC TTT GCG CGC ACT
Answer:
B and C
Explanation:
The two species in options B and C are closely related because their nucleotide sequence is almost similar. Hence, options B and C are correct.
What is nucleotide sequence?The most fundamental understanding of a gene or genome is its nucleotide sequence. Without having it, it would be impossible to comprehend how genes function or how organisms evolve because it is the blueprint that holds the instructions for developing an organism.
The four nucleotides that make up DNA are adenine (A), thymine (T), guanine (G), and cytosine (C). The two DNA strands are connected by base pairs, which are formed when the nucleotides (A with T and G with C) bind to one another.
The two species in options B and C are closely related because their nucleotide sequence is almost similar. Hence, options B and C are correct.
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Use the drop-down menus to complete the sentences.
is a seasonal wind that blows in the opposite direction of normal winds.
wind is a wind that blows mainly from a single general direction,
Seasonal winds that blow in the opposite direction of normal winds often cause
in the winter
(a) A monsoon wind is a seasonal wind that blows in the opposite direction of normal winds.
(b) A prevailing wind is a wind that blows mainly from a single general direction.
(c) Seasonal winds that blow in the opposite direction of normal winds often cause drought in the winter.
What is monsoon wind?A monsoon wind is a seasonal change in the direction of the prevailing winds of a region. This seasonal wind blows in the opposite direction of normal winds.
What is prevailing wind?This wind blows predominantly from a particular direction. A prevailing wind is a wind that blows mainly from a single general direction.
What wind causes drought in winter?This type of wind usually blow in opposite direction, example; east to west, or west to east or north to south or south to north.
Thus, the seasonal winds that blow in the opposite direction of normal winds often cause drought in the winter.
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Answer:
A moonsoon
is a seasonal wind that blows in the opposite direction of normal winds.
A prevailing
wind is a wind that blows mainly from a single general direction.
Seasonal winds that blow in the opposite direction of normal winds often cause drought
in the winter.
Explanation:
Which theory states that living things change lower overtime in response to changes their environment
Answer:
Darwin's theory
Explanation:
Species change over time; some traits become more common, others
less. This process of change is driven by natural selection. The traits that become more common are the ones that are “adaptive” or “increase fitness”
(that is, a creature’s chances of living longer and producing more offspring).
Example: the long neck of giraffes.
Although there is not a complete record of ancient life on Earth for the past 3.5 billion years, scientists have still been able to
construct a history of life. Where do scientists obtain the majority of their modern knowledge about the history of life?
OA.
fossils
OB. hieroglyphics
Oc. erosion
OD. books
If given the terms brain, nervous system, neuron, and a collection of neurons,
what is their order from SIMPLEST TO MOST COMPLEX?
I made it 15 points someone answer...please.
neuron collection of neurons nervouse system and brain
Final answer:
The order from simplest to most complex is the neuron, collection of neurons, nervous system, and then the brain, with the brain being the most complex as it controls numerous vital functions and processes in the body.
Explanation:
If given the terms brain, nervous system, neuron, and a collection of neurons, the order from SIMPLEST TO MOST COMPLEX is as follows:
NeuronCollection of neuronsNervous systemBrainThe neuron is the basic functional unit of the nervous system, each transmitting electrochemical signals. A collection of neurons forms complex networks that can communicate and process information but are less complex than the entire nervous system. The nervous system, comprising the central and peripheral nervous systems, orchestrates the activity of the entire body, making it more complex than just a group of neurons. Finally, the brain, as the command center of the nervous system, is the most complex due to its vast array of functions including consciousness, voluntary and involuntary movement control, and bodily functions.
Explain how fossils can give information about past environmental conditions. Give at least two examples. Answer using complete sentences.
Answer:
The type of fossil can show what the terrain was like.
Explanation:
Fossils can give information about past environmental conditions by showing the type of animal they belonged to. If a scientist found a whale fossil in a desert, he/she could assume that the desert was once an ocean as whales only live in oceans. If someone found a fossil of a lizard that inhabited trees, in the middle of the ocean, then he/she could assume that the ocean didn't exist at one point and instead, there might have been a forest in it's place.
Hope this helps!
Fossils inform us about past environmental conditions by providing evidence of ancient habitats and climates. Plant fossils can indicate previous warm and humid climates, while marine fossils suggest past sea levels and conditions. Fossil studies help reconstruct paleoenvironments, contributing to our understanding of Earth's history.
Explanation:Fossils can provide a plethora of information about past environmental conditions. These preserved remains, such as bones, teeth, and impressions, serve as evidence of life that has long since vanished from our modern world. Through studying fossils, scientists can make inferences about ancient habitats, climates, and how organisms interacted with their surroundings.
Two examples that illustrate how fossils can reveal past environmental conditions are the study of plant fossils and marine fossils. Plant fossils, like those of ancient ferns, may indicate that a particular area was once a swamp or had a warm and humid environment. This is evidence of climate conditions in that area at the time the plant was alive. Another example is the study of marine fossils found in areas that are now deserts. Such discoveries suggest that the region was once underwater, revealing past sea levels and oceanic conditions. These fossils provide information on the temperature, salinity, and depth of the ancient seas, thereby informing us about the Earth's geological past.
Fossils give us the unique opportunity to reconstruct ancient ecosystems. Through them, paleoecologists may deduce paleoenvironmental conditions such as water depth, light availability, and energy level (calm vs. turbulent). For instance, the presence of oyster fossils can suggest that the area had the capability of supporting life that could withstand varying salinity levels, indicating that the water body experienced changes between fresh and saltwater influxes. This ability of reconstructing paleoenvironments is valuable not just for evolutionary biology but also for broader fields like geology and even climate science.
What would happen if the palisade Mesophyll were below the spongy Mesophyll
Explanation:
The palisade mesophyll and the spongy mesophyll are the parenchyma cells present in the middle portion of the leaf which performs a specific function.
The palisade mesophyll is present in the upper portion of the leaf and contains chlorophyll. The chlorophyll is involved in the process of photosynthesis therefore palisade layer perform photosynthesis.
The spongy mesophyll is arranged in the lower portion of the leaf in a loosely packed structure. The spongy mesophyll allows the circulation or flow of the carbon dioxide and oxygen in the leaf.
Since the stomata are present in a higher amount on the lower side of the leaf, therefore, gas exchange takes place through the lower portion and therefore the spongy parenchyma is present on the lower portion.
If the spongy parenchyma is present on the upper side and the palisade on the lower side then the gaseous exchange will be difficult and the photosynthesis will not be performed.
Palisade mesophyll and spongy mesophyll are parenchymal cells located in the central part of the leaf and perform specific functions.
Palisade mesophyll is located at the top of the leaf and contains chlorophyll. Since chlorophyll is involved in the process of photosynthesis, the Parisaise layer performs photosynthesis.
The spongy mesophyll is placed in a loosely packed structure at the bottom of the leaf. Sponge-like mesophyll allows the circulation or flow of carbon dioxide and oxygen in the leaves. Due to a large number of stomata on the underside of the leaves, gas exchange takes place from the bottom and there is spongy parenchyma at the bottom.
If the spongy substance is on the top and the fence is on the bottom, gas exchange will be difficult and photosynthesis will be difficult.
What is the function of a palisade mesophyll?The mesophyll layer is the walls where most photosynthesis occurs in the leaves. Palisade cells contain many chloroplasts that aid in this photosynthesis. Palisade cells are densely packed to maximize light absorption.
Hence concluded that if the palisade Mesophyll were below the spongy Mesophyll it will cause difficulty in photosynthesis.
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Last question please help
Answer: the answer is the second to last one
Explanation:
Which of the following is true regarding glycolysis?
Choose 1 answer:
A. It requires glucose as a reactant.
B) It produces 36 ATP.
C It occurs in the mitochondria.
D It is an acrobic process.
The true statement about glycolysis is that it requires glucose as a reactant. Glycolysis is anaerobic and occurs in the cytoplasm, yielding two ATP molecules and not 36. It does not take place in the mitochondria nor require oxygen directly.
The true statement regarding glycolysis is that it requires glucose as a reactant. Glycolysis is a sequence of enzymatic reactions where glucose is converted into two molecules of pyruvate. This process is anaerobic, meaning it does not require oxygen, and it takes place in the cytoplasm of both prokaryotic and eukaryotic cells, not in the mitochondria. Therefore, statements B and C are incorrect. Statement D is also incorrect because glycolysis can occur whether oxygen is present or not, making it an anaerobic process. The net yield of glycolysis is two ATP molecules per molecule of glucose, rendering statement B incorrect.
During glycolysis, the reactants include glucose, ATP, ADP, NAD+, and inorganic phosphate. The products of glycolysis include a net gain of two ATP molecules, two NADH molecules, and two pyruvate molecules. Considering the other statements, glycolysis does produce pyruvate, but it is not directly entered into the citric acid cycle without further modification in eukaryotic cells. The first phase of glycolysis is endergonic, requiring the input of ATP, whereas the latter part of the pathway is exergonic, producing a net gain of ATP.
How might continuing increases in the price of fossil fuels affect research on the development of
renewable resources, such as wind power and solar energy?
Rising fossil fuel prices typically stimulate research and development in renewable resources, making alternatives such as wind and solar energy more competitively priced and technologically advanced, leading to a potential shift toward sustainable energy solutions.
Continuing increases in the price of fossil fuels are likely to have a significant impact on the research and development of renewable resources like wind power and solar energy. When the cost of fossil fuels rises, due to depletion of supplies or geopolitical pressures, renewable energy sources become more economically competitive. Historical evidence demonstrates a pattern: as fossil fuel prices increase, such as during the oil shocks of the 1970s, there is heightened interest and investment in alternative energy sources. The ensuing investment and research in renewables can lead to technological advancements, improving their efficiency and making them more cost-effective. Ultimately, this can lead to a shift towards more sustainable energy sources, driven by the combination of market forces, climate change concerns, and the need for energy security in light of finite fossil fuel resources.
The life expectancy in the US increased more than 30% from 1930 to 2015 which factor could have contributed to this increase a better medical facilities and treatments be decreased Farmland C increased food insecurity D refusal of vaccines
Both animals and plants require energy to perform their daily life functions. Animals generally consume food and drink water through their mouths to gain energy. Which plant structure most similarly serves the function of a mouth
Answer:
Roots
Explanation:
Roots gather moisture from the ground for the plant
In plants, roots absorb water and minerals, while leaves perform photosynthesis to produce energy, functioning collectively as the plant equivalent to an animal's mouth.
Plant Structures and Energy Absorption
The structure in plants that most similarly serves the function of a mouth in animals would be roots combined with leaves. While animals ingest food and water through their mouths, plants absorb water and minerals through their roots and capture energy from sunlight using their leaves through the process of photosynthesis. Roots may not directly imbibe 'food' as animals do, but they absorb the necessary water and dissolved minerals from the soil. Leaves then utilize these substances along with sunlight to create energy-rich sugars that fuel the plant’s growth and functions.
Moreover, animals rely on the digestion of consumed organic matter for their energy, whereas plants can manufacture their own food by converting sunlight into chemical energy. This significant difference is key to understanding energy acquisition in the plant kingdom. The structures responsible for this, particularly the leaves, contain chloroplasts with chlorophyll that capture solar energy and convert it into sugars in a process known as photosynthesis. Therefore, roots and leaves together represent the plant equivalent of animal mouths when considering their roles in energy and nutrient uptake.
Help me pls pls pls
Answer:
B?
Explanation:
Select the correct answer to complete the statement.
Compound microscopes focus light through
Choose...
to produce a magnified image.
Choose...
matter
lamps
fenses