Answer:
The correct answer is option c, that is, it has no pseudocoelom.
Explanation:
Platyhelminthes are also known as flatworms. They are generally parasitic, these are triploblastic species with bilateral symmetry. In Platyhelminthes, flame cells do the function of excretion, however, these species are devoid of a circulatory system. On the other hand, nematodes are also known as roundworms and like Platyhelminthes, the nematodes are also diploblastic species with bilateral symmetry.
However, Platyhelminthes are acoelomate, on the other hand, nematodes are pseudocoelomate species. The Platyhelminthes lack a complete digestive system, while nematodes have a complete digestive system. Thus, it can be stated that the body plan of Platyhelminthes is less advantageous in comparison to nematodes because of no presence of pseudocoelom.
Which of the following best describes the use of a non–renewable resource? (2 points)
a. California has several power plants that use heat from the Earth to generate electricity.
b. In the state of Texas, you can find miles of windmills that are used to generate electricity.
c. Oil is burned to heat water into steam in order to turn turbines that generate electricity.
d. The electronic signs along the highway are run by solar power.
PLEASE HELP
Answer:
c
Explanation:
the answer is c because oil is a non renewable resource due to the time it takes to make
Natural gas is unquestionably a much cleaner non-renewable energy source than coal, but it still contributes to almost a third of the nation's greenhouse gas emissions. Thus, option C is correct.
What is the significance of non-renewable resource?A resource is nonrenewable if it is consumed more quickly than it can replenish. A nonrenewable resource's supply is limited, which means it is difficult to refill. The Earth itself is used to harvest non-renewable resources.
Nuclear power, natural gas, coal, and oil are examples of nonrenewable energy sources. The fact that we now rely on these resources to provide the majority of our energy needs makes the fact that they cannot be replenished after they are depleted a serious issue for humanity.
Therefore, oil is burned to heat water into steam in order to turn turbines that generate electricity, best describes the use of a non-renewable resource.
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Which release of greenhouse gases can be attributed to human activities?
A. Manufacturing plants
B. Volcanic eruptions
C. Solar cycles
D. Wildfires
This phylum includes the vertebrates, together with several closely related invertebrates. They are united by having, at some stage in their life, a notochord, a hollow dorsal nerve cord, pharyngeal slits and a muscular tail extending past the anus.
Answer:
Chordates
Explanation:
Chordates (phylum Chordata) include the vertebrates, together with several closely related invertebrates.
Incomplete dominance can be observed in snapdragons. Snapdragon flowers
that have two RR alleles have a red phenotype. Snapdragon flowers with arr
have a white phenotype. Snapdragon flowers that are Rr are pink.
11. Fill in the two Punnett squares in diagram at right.
12. This is a non-Mendelian trait, but how could this be different if the trait
was Mendelian?
Incomplete dominance is observed in snapdragons, where the phenotype of the flower is determined by the combination of alleles. The Punnett squares show the possible genotypes and phenotypes of the offspring. If the trait were Mendelian, there would be distinct phenotypic differences between the homozygous genotypes.
Explanation:Incomplete dominance is observed in snapdragons, where the phenotype of the flower is determined by the combination of alleles. In this case, snapdragons with two RR alleles have a red phenotype, those with aa alleles have a white phenotype, and those with Rr alleles have a pink phenotype.
The Punnett squares can be filled out by crossing a RR individual with an rr individual or crossing two Rr individuals. In the first case, all offspring will be Rr (pink phenotype). In the second case, there will be a 1:2:1 ratio of RR:red, Rr:pink, and rr:white offspring.
If the trait were Mendelian, the dominant allele would completely mask the recessive allele, resulting in a clear-cut phenotypic difference between the two homozygous genotypes RR and rr, without any intermediate phenotype.
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Darwin’s theory of evolutions unifies all of __________.
Answer:
biology
Explanation:
A.s.a.p!
Select the correct answer.
Which of the following correctly describes how carbohydrates are utilized in the body?
Carbohydrates from the food you eat are broken down to glucose then transported through the blood stream to cells in the
body where they provide energy.
Glucose from food you eat is built into carbohydrates, transported in the blood stream to the cells in the body where they
provide energy.
Carbohydrates from the food you eat are transported through the blood stream to the cells in the body where they provide
energy and create a by-product called glucose.
D.
Carbohydrates from the food you eat provide energy to cells and are then transported through the blood stream to be stored
as glucose.
Answer:
Answer is D
Explanation:
All the genetic material needed to grow a human is present in the ___________ of its cells.
Question 1 options:
cytoplasm
nuclei
lysosomes
endoplasmic reticulum
The answer is nuclei
1. scientists had identified a pattern in the moths that they thought was important. What was the pattern?
2. The classified identified several factors that could affect populations. One of those factors was abiotic. What are some abiotic factors that you think would be affecting the moth population.
Answer:
1. They had predators both at night and through the day, and that they tried to hide and rest on trees but were not very hidden.
2. The chemicals released by the female moths to mate and lay eggs is an important abiotic factor in which affected the population. The more the chemical was released, the more it led to eggs being laid and reproducing.
Explanation:
The moth symbolizes rebirth, change, transformation, resurrection, and the power of regeneration in Native American mythology. In fact, butterflies and moths both hold a significant position in the Native American culture.
How did moths evolve?
Scientists have long attributed these insects' rich variety to their close connections with other organisms. Butterflies, they hypothesized, evolved in tandem with the plants they fed on, and moths developed sophisticated defense mechanisms in response to bats, their main predators.
What is the cycle of a moth?There are four stages of the moth life cycle: eggs, larvae, pupa/cocoon, and adult. Each stage represents a significant step in a moth's lifespan.
What was causing the change in the moths?Genetic ChangesMoths passed their color to the next generation. Eggs from light moths developed into light moths and dark moth eggs turned to dark adults. The dark color was caused by a mutation in the DNA of a single moth, and the mutated gene had been passed to all its offspring.
How abiotic factors affect moth populations?Environmental factors that influence populations are divided into two categories – abiotic and biotic factors. Abiotic factors refer to the non-living physical and chemical elements found in an ecosystem such as rainfall, temperature, pH, sunlight, shelter and day length.
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Which of these is a reason that we should perhaps be using more nuclear energy?
A.
The technology used in nuclear power plants is used in other industries.
B.
It does not contribute to atmospheric (air) pollution.
C.
Nuclear power is more efficient (more energy per mass) than other sources.
D.
All of these.
Answer:
b
Explanation:
Plants that have tube-like structures for water and nutrients to travel up and down from roots to leaves
Answer:
the answer is vascular plants
Explanation:
The question refers to vascular plants, plants with specialized structures for conducting water, nutrients, and sugars. These structures, known as xylem and phloem, allow these plants to grow larger and survive in diverse environments.
Explanation:The student's question relates to plants with tube-like structures, which is a reference to vascular plants. Vascular plants are characterized by the presence of specialized structures for the movement of water and nutrients: the xylem and phloem, collectively known as vascular tissue. The xylem transports water and minerals from the roots to other parts of the plant, while the phloem distributes sugars produced via photosynthesis from the leaves to other parts of the plant.
Examples of vascular plants include trees, shrubs, and flowering plants. This feature allows these plants to grow larger and survive in a multitude of environments.
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write a paragraph about ocean currents
Answer:
Ocean currents are basically water wind.
Explanation:
how do specialized cells within an organism help the organism perform the essential function of life
Answer:
Systems of specialized cells within organisms help them perform the essential functions of life, which involve chemical reactions that take place between different types of molecules, such as water, proteins, carbohydrates, lipids, and nucleic acids. All cells contain genetic information in the form of DNA molecules.
Explanation: :)
Desertification may be caused by
water pollution
smog
rain
overgrazing
Answer:
Water pollution
Explanation:
Polluted water can lead to crops dying and dehydrated, leading to desertification.
If there is less space for natural ecosystems, then _____ may happen to plants and animals living in those ecosystems. *
the first person will be the brainliest
I believe that death will be the result.
2 Points
Which habitat receives the least amount of rain?
O
A. Tropical rain forest
O
B. Grassland
O
C. Desert
O
D. Deciduous forest
Answer:
Desert
Explanation:
if you even just look it up out of all habitats, desert is the option.
Deserts are found commonly near the equator, they are excruciatingly hot in the day, and freezing cold at night. They get little rain due to the heat or cold.
Definitely not rain forest, rain IN THE NAME
Grasslands in the US get rain fairly frequently. The graslands on the savanna have rain seasons too.
Deciduous forest is kind of the average pine and oak forest so rain does occur
i hope this helps u
pls give a brainliest and a thx ;)
Which of the following answer correctly describe DNA. There is more than one correct answer.
Bases are adenine, uracil, cytosine and guanine.
Bases are adenine, thymine, cytosine and guanine.
Single helix
Sugar is deoxyribose
Sugar is ribose
Double helix
Answer:
the second, fouth, and last
Explanation:
Double helix
Sugar is deoxyribose
Bases are adenine, thymine, cytosine and guanine.
those are true
When a cell differentiates, it becomes a stem cell.
○True
O False
Answer:
Technically yes, and no. Read the following:
Explanation:
Stem cells can give rise to specialized cells. When unspecialized stem cells give rise to specialized cells, the process is called differentiation. While differentiating, the cell usually goes through several stages, becoming more specialized at each step.
The statement is incorrect. Cell differentiation is the process by which a stem cell, which is less specialized, becomes more specialized. This ability of stem cells sets them apart as they can regenerate and replace damaged cells.
Explanation:The statement 'When a cell differentiates, it becomes a stem cell' is False. This is because cell differentiation is the process by which a less specialized cell, such as a stem cell, becomes a more specialized cell type. For instance, stem cells can differentiate to become heart muscle cells, brain cells, or skin cells, among others. The ability of stem cells to differentiate into specialized cells is what makes them so important in biology and medicine - they're essentially a cell type that can regenerate and replace damaged cells in the body.
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Which of the following combinations would create the fastest chemical reactions?
A.
a whole antacid tablet and vinegar at 25 degrees Celsius
B.
a whole antacid tablet and vinegar at 50 degrees Celsius
C.
a crushed antacid tablet and vinegar at 25 degrees Celsius
D.
a crushed antacid tablet and vinegar at 50 degrees Celsius
The combinations which would create the fastest chemical reactions is a crushed antacid tablet and vinegar at 50 degrees Celsius. Thus, the correct option is D.
What factors affect rate of a chemical reaction?The five factors which can affect the rates of the chemical reactions include the chemical nature of the reacting substances or reactants, the state of subdivision which is one large lump versus many small particles of the reactant molecules, the temperature of the reactant molecules, the concentration of the reactant molecules, and the presence of a catalyst in the chemical reaction.
The combinations which would create the fastest chemical reactions include taking a crushed tablet as a better option than whole tablet because as the surface area of the tablet increases, the rate of reaction increases. Also, as the temperature of the reaction increases, the rate of reaction also increases. So, 50 degrees Celsius temperature is better option than 25 degrees Celsius.
Therefore, the correct option is D.
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In any environment, the 'fittest'organism is the...
Games like tag and hide and seek are examples of:
A: Constructive play
B: Fantasy play
C: Creative play
D: Motor play
E: Parallel play
Answer:
D: Motor play
Explanation:
There are various games that could be play among children such as
: Constructive play
Fantasy play, Creative play, Motor play and Parallel play
A motor skill is associated with muscle, There are different fitness components associated with motor skill games which are speed, agility,coordination and others. Motor games can be carried out
when one's brain, nervous system and muscles work together to move parts the part of one's body
Which is not a method that protists
can use to move
cilia
spores
flagella
pseudopods
Which of the following best matches a part of a living cell with the function it performs?
O Cytoplasm: green structure inside plant cells
O Cell membrane: green structure inside plant cells
Cytoplasm: surrounds a cell and allows substances to pass in and out
O Cell membrane: surrounds a cell and allows substances to pass in and out
Answer:
O Cell membrane: surrounds a cell and allows substances to pass in and out
Explanation:
Cell membrane is also called plasma membrane. Cell membrane is the boundary of the cell which helps in the protection of the cell from external environment. Cell membrane is a semipermeable membrane which has small pores that allows substances such as water, glucose, Sodium ion, oxygen and carbondioxide etc to pass through it.
Answer:
(C.)
Cytoplasm: surrounds a cell and allows substances to pass in and out
!00 Pointzzzzzzzz!!!
See the photo then answer
Answer:
B
Explanation:
Velocity is the rate of motion, speed or action.
ANSWER PLZ ASAP!!!!
which of the following is not generally considered a threat to endangered species
Answer:
B.) Competition for mates
Explanation:
Generally, species become endangered in the first place has to do with humans. If you analyze the other options, they each typically are caused by humans.
Poaching is illegal hunting or capturing of animals (endangered or not)
Clear-cutting is the same as deforestation, and causes habitat loss
Introduction of non-native species is typically caused by people who bring pets from other countries back to their native countries.
A competition for mates isn't normally something that causes a species to go endangered or extinct. The other options are much more threatening to this!
Mark received one dominant allele for brown hair from his father and another dominant allele from his mother.
Which word describes his genotype?
A blonde
B heterozygous
Chomozygous
D brown
Answer:
homozygous
Explanation:
when an individual both copies of a given gene have the same allele
In genetics, an individual who receives one dominant allele and one recessive allele is said to be heterozygous for that gene.
Explanation:In genetics, an individual who receives one dominant allele and one recessive allele is said to be heterozygous for that gene. The dominant allele is represented by an uppercase letter, and the recessive allele is represented by a lowercase letter. In this case, since Mark received one dominant allele for brown hair from his father and another dominant allele from his mother, his genotype can be described as heterozygous.
WILL DO BRAINLY. The diagram shows fossils embedded in rock layers.
Based on the diagram and the table, when was fossil 1 formed?
A) after any of the other labeled fossils
B) before any of the other labeled fossils
C) after fossil 2, but before fossils 3, 4, and 5
D) before fossil 2, but after fossils 3, 4, and 5
Answer:
D)
Explanation:
Since the fossil is on the second layer anything above that is formed directly after since it is on the top. Meanwhile everything below that was formed before.
why is homeostasis important to organisms
Answer:
maintaining homeostasis is important is because single- celled organisms rely on it so it can carry out all the functions necessary for life.
The light-independent reactions in plants produce
a. ATP
b. COM
C.
simple sugars
proteins
Answer:
the answer is ATP
Explanation:
Which of the following would provide physical evidence that could change the divisions on the geologic timeline?
A. the discovery of ancient ruins buried deep in the ocean floor sediments
B. the discovery of fossilized microorganisms in ocean floor sediments
C. the discovery of evidence of humans who lived long ago
D. the discovery of evidence of different kinds of rocks that recently appeared
Answer:
b
Explanation:
Physical evidence that could alter the divisions on the geological timeline would be provided by the discovery of preserved microbes in ocean floor strata. So, the correct option is B.
What is Geological timeline?The Earth's rock record serves as the foundation for the geologic time scale, also known as the geological time scale. It is a method of temporal dating that makes use of geochronology and chrono stratigraphy. Earth scientists use it mostly to explain the sequence and connections between events in the Earth's geologic past.
The first animal and plant life on Earth, the emergence of mountains on Earth, and the destruction of the dinosaurs are just a few instances of events that are recorded on the geologic time scale.
The finding of preserved microorganisms in ocean floor strata would provide tangible proof that could change the divisions on the geological timeline.
Therefore, the correct option is B.
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What ability have many cave fishes lost
Answer:
most likely sight
Explanation: it is very dark in caves anyways, and their pupils would need to adjust to light, and of they have been living in a cave for a while, they would have adapted larger pupils to take in any possible light.
Answer:
the ablility to see
Explanation: