Answer:
Pituitary Glands
Explanation:
In plants, gymnosperms have cones and angiosperms have flowers. What are both of
these plant structures specialized for?
Ophotosynthesis
food production
water absorption
O sexual reproduction
Answer:
O sexual Reproduction
Explanation:
The cones and flowers of gymnosperms and angiosperms are respectively specialized structures for se*ual reproduction.
What is se*ual reproduction?Se*ual reproduction is the process whereby a new organism is created by combining the genetic material of two organisms.
Higher plants, which consists of angiosperms and gymnosperms reproduce via se*ual means.
Angiosperms also called flowering plants produce flowers while gymnosperms produce structures called cones.
These structures (cones and flowers) produced by gymnosperms and angiosperms respectively are used for se*ual reproduction.
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Which statements show the importance of clean air?
The statements that show the importance of clean air are:
Air is a natural resource.
Governments manage air pollution to provide clean air.
Ultrafine particles contribute to 17,000 deaths per year in the United States.
Particles in the air cause health problems.
These statements highlight the significance of clean air for human health, the role of governments in managing air pollution, and the detrimental effects of air pollution on both individuals and society.
Air is an essential natural resource that is composed of various gases, including oxygen, nitrogen, carbon dioxide, and trace elements. It is necessary for the survival of all living organisms, including humans, animals, and plants.
Governments manage air pollution to provide clean air: Governments around the world recognize the importance of clean air and take measures to manage and reduce air pollution. They implement regulations, policies, and standards to control emissions from industries, vehicles, and other sources, aiming to improve air quality and protect public health.
So how do we get chickens with white and black spots? Shouldn’t they be only white or black?
Answer:
Codominance
Explanation:
This is an example of codominance.
Basically with this type of genetics, both alleles for that trait, in this case feather color, are dominant. This means that both will appear in the phenotype, instead of a dominant phenotype overshadowing a recessive phenotype.
Here, the two dominant alleles are the one that governs white pigment and the one that governs black pigment. Since codominance is occurring, we see a speckled chicken instead of just an entirely white one or an entirely black one.
Hope this helps!
Describe how human induced changes in the atmosphere impact at least one other sphere (ex hydrosphere, geosphere, biosphere, cryosphere).
Answer:
Human induced changes could impact all of the mentioned spheres. Below I have explained the changes for hydrosphere as an example.
Explanation:
Hydrosphere plays an important role for all forms of life on Earth. Hydrosphere includes all forms of water on the planet, Humans are impacting the hydrosphere due to their anthropogenic activities that leads to aquatic pollution. Further, increasing human's population are subject to urbanization and industrialization. More industries are being installed and ultimately more pollution is happening. If we look at the example of oil industry, every year, oil industry globally produces approximately 33.6 million barrels per day of oil-contaminated water during drilling, extraction and refining processes. Crude oil contains significant proportions of hydrocarbons including alkanes, aromatics, polycyclic aromatic hydrocarbons, as well as non-hydrocarbons such as naphthenic acids. If these compounds are released into the environment as wastewater without any treatment, they come in contact with the living organisms and cause several disease because of their carcinogenic, neurotoxic, or genotoxic nature. At first, it affects the aquatic life, then those aquatic organisms which are being eaten by secondary or tertiary consumers, they will also get affected.
If we look carefully, organisms within aquatic environment comes in the biosphere and hence, biosphere is also being affected. In fact, all of these spheres are somehow connected and disturbance of one sphere put a pressure on other one.
Answer:
Explanation:
Human induced changes have greatly altered the nature of the hydrosphere for a long time now.
The hydrosphere is the water blanket round the earth. It accounts for 70% of the total surface area of the earth. The rest is the continent.
One of the human induced changes to the atmosphere originates from global warming. Global warming is the rise in earth's temperature. It results from greenhouse effects. When greenhouse gases like carbon monoxide and methane are produced in excess, they trap outgoing solar radiation anomalously. These gases helps to buffer the temperature on earth. When their concentration is too much, they will increase the temperature more than usual. This will eventually lead to melting of polar ice and inundation of the hydrosphere with melt water. Humans are one the chief contributors to the production of the greenhouse gases.Which of the following is true of penguins?
A. They live in the polar regions of the Northern and Southern hemispheres.
B. They can be found as far north as the Equator.
C. They are ectotherms.
D. They time their reproduction so that eggs hatch during the winter.
E. They are able to fly when disturbed.
A. They live in the polar regions of the Northern and Southern Hemispheres.
Final answer:
Penguins can be found as far north as the Equator, with the Galapagos penguin living near that region (option B). They are not ectotherms but endotherms, and they do not fly as they are flightless birds who are adapted for swimming and diving.
Explanation:
Of the options provided about penguins, B. They can be found as far north as the Equator is true. Penguins primarily live in the Southern Hemisphere, particularly in Antarctica, though not exclusively so. One species, the Galapagos penguin, lives near the Equator. Penguins are endotherms (warm-blooded), which allows them to maintain a stable body temperature despite environmental fluctuations. Therefore, it is incorrect to say they are ectotherms. Regarding their breeding habits, many penguin species time their reproduction so that the chicks are hatched and reared during the warmer months when food is more abundant, not in the winter. Finally, penguins are flightless birds, so they cannot fly when disturbed or under any circumstance. They are well-adapted to swimming and diving instead.
All of the following are examples of biofuels EXCEPT
Biodiesel
Propane
Ethanol
Methanol
Answer:
propane
it's propane because biodiesel is a form of diesel fuel, ethanol is a chemical compound and methanol is the simplest alcohol.
Answer:
Propane
Explanation:
A student and their pet (is mutualism, commensalism, or parasitism.)
Answer:
mutualism
Explanation:
nothing is gained from either side besides the student taking care of the pet and loving it
Answer: Commensalism
Explanation: Commensalism by definition means "biological interaction in which members of one species gain benefits while those of the other species neither benefit nor are harmed". The student is benefiting the pet by giving food and love while the pet is not giving the student anything back.
the carbon dioxide absorbed by plants is returned to the atmosphere when:
Answer:
Explanation:
when Each time you exhale, you are releasing carbon dioxide gas (CO2) into the atmosphere. Animals and plants need to get rid of carbon dioxide gas through a process called respiration. Carbon moves from fossil fuels to the atmosphere when fuels are burned.
Answer:
Explanation:
Respiration by animals, plants and micro organisms
animals eat plants and animals breath
Is knowing about the physical and chemical changes of food important for a molecular gastronomy chef?
Yes, knowing about the physical and chemical changes of food important for a molecular gastronomy chef.
Explanation:
Molecular gastronomy involves cooking recipes with the knowledge of the basic science behind food, the various chemical and physical changes that happens to the various ingredients due to the cooking process.
Gastronomic chefs apply various scientific principles while preparing, cooking, serving, and storing food to make it more tasty and present a great dining experiences.
Using technology and science to create foams of whipped cream, mousse; spherification of liquids like fruit juices; applying appropriate temperature control etc are utilized by these chefs. The various change of state of matter is applied to understand the physical and chemical changes of food by the molecular gastronomy chefs.
Molecular gastronomy chefs greatly benefit from understanding the physical and chemical changes of food, as this knowledge allows them to create innovative dishes with precise control over flavors, textures, and visual effects.
Explanation:Understanding the physical and chemical changes of food is indeed crucial for a molecular gastronomy chef. Molecular gastronomy is an innovative culinary field where understanding food at a molecular level allows chefs to create new textures, flavors, and visual effects to enhance the dining experience. By comprehending the thermochemistry involved in cooking, chefs can manipulate the energy content and reaction rates to achieve desired culinary results. Whether using knowledge of the Maillard reaction to add complexity to flavors or employing emulsifiers for stable foams and sauces, chefs exploit chemistry in cooking to innovate and excite the palate.
Just like a chemist observes smell, color, state, temperature, mass, and texture to understand new materials, a molecular gastronomy chef will use similar observations to innovate in the kitchen. These observations, combined with their understanding of how heat affects the chemical structure of food, or how ingredients interact on a molecular level, are integral to the creation of their culinary masterpieces. From frying eggs to the absorption of food in the digestive system, chemistry is deeply involved in the transformation of food from raw ingredients to the finished dish.
Thus, not only is it important for molecular gastronomy chefs to have a deep knowledge of chemistry, but it's essential for their art. It allows them to precisely control the physical and chemical transformations of ingredients, leading to the creation of innovative dishes that are as pleasing to the eye as they are to the palate.
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A plant heterozygous for yellow pod color (Yy) is crossed with a plant homozygous for green pod color (yy). Which trait is dominant? Which trait is recessive?
Answer: edge2020: B) yellow pod color
Explanation:
Which substance is comprised of more than one element?
aluminum
helium
silver
steel
Answer:
steel
Explanation:
use a periodic table
Steel. It's a metal made of mainly iron and carbon, as well as other metalloid elements.
Drag each label to the correct location
Claire had a heavy breakfast early in the morning. Then she went to the gym to exercise. After the gym. Claire went to class.
While exercising the body requires a continuous supply of energy and uses up blood sugar at a faster rate. How will hormones maintain the
sugar balance in the body from breakfast until Claire has lunch?
high blood sugar
secretion of glucagon
secretion of insulin
glycogen breaks down
to glucose
after breakfast
blood sugar low
pancreas
pancreas
intake of sugar
by liver cels
The Langerhans cells in the pancreas secrete the polypeptide hormone insulin, which has a hypoglycemic impact. The function of the pancreatic hormone glucagon is to promote the conversion of glycogen to glucose.
What is an Insulin Hormone?Insulin primarily a peptide hormone that is secreted by the islets of the pancreas of Langerhans cells. It regulates carbohydrate, lipid, and protein metabolism, facilitates cellular glucose uptake, and promotes cell division and proliferation via its mitogenic effects.
Following a meal, carbohydrates decompose to produce glucose, a sugar that serves as the body's main source of energy. After then, glucose enters the bloodstream. In response, the pancreas produces insulin, allowing glucose to get into the body's cells and fuel them with energy.
Therefore, the Langerhans cells in the pancreas secrete the polypeptide hormone insulin, which has a hypoglycemic impact. The function of the pancreatic hormone glucagon is to promote the conversion of glycogen to glucose.
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Most livestock-related injuries are due to what animal trait?
aggression
animal size
inexperience
handler negligence
Answer:
animal aggression
Explanation:
Livestock-related injuries are mostly caused due to animal aggression. Aggression is one of the most common reasons behind livestock-related injuries. Animals, especially livestock, can be unpredictable in nature. Livestock, including cattle, can become aggressive if they feel threatened, intimidated, or cornered.
What would happen if you removed a level from the levels of organization?
Answer:If we were to remove just one level of organization all the other levels would fall apart. It would then become very difficult to make any decisions without all the levels put together as one.
Explanation:
Removing a level from the levels of organization in biology disrupts the hierarchical structure that organizes living things. Items were organized from smallest to largest: hydrogen atom, water molecule, skin cell, liver, elephant, wolf pack, tropical rainforest, and planet Earth.
If you remove a level from the levels of organization in biology, it would disrupt the hierarchical structure that organizes living things from the simplest to the most complex. The levels of organization, from the smallest to the largest, are typically categorized as atom, molecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem, and the biosphere.
Using the provided items, we can organize them from the smallest to the most encompassing as follows:
Hydrogen atomWater moleculeSkin cellLiver (organ)Elephant (organism)Wolf pack (population)Tropical rainforest (ecosystem)Planet Earth (biosphere)These levels were placed in this order reflecting their scale and complexity, starting from the subatomic particles that make up atoms, moving to complex molecules, then to cells which are the basic units of life. Organs are made up of tissues, which are made up of cells. Organisms are individual living entities, populations are groups of the same species, ecosystems comprise living and nonliving components in a particular area, and the biosphere encompasses all ecosystems on Earth.
What is the reflection of light in all directions. It is a 10 letter word, that’s all I know.
HURRY PLEASE!!
Chunks of rock and metal from planetary bodies that survive their journey through the atmosphere and fall to the ground are called meteorites and scientists have found over 50,000 on Earth's surface. What is the origin of the majority these meteorites?
A. They are pieces of a planet that have broken off.
B. They are the original materials from which the planets formed.
C. They are bits of our moon that have eroded and fell back to Earth.
D. They are jarred loose from a meteor belt found among the outer planets.
Final answer:
The majority of meteorites are fragments from asteroids and are primitive objects that date back to the formation of the solar system. Some may also originate from impacts on planets like Mars or our Moon.
Explanation:
The majority of meteorites originate from the debris of space, mostly fragments of asteroids, and to a lesser extent, from impacts on Mars or our Moon. Meteorites represent primitive objects that are dated back to the origin of the solar system around 4.5 billion years ago and are considered remnants of the solar nebula from which the solar system formed. These remnants, which include asteroid fragments and possibly pieces from planetary impacts, have managed to survive the fiery journey through Earth's atmosphere and reach our planet's surface.
Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings?
The wings are analogous structures that evolved differently and do not have a similar internal structure.
The wings are homologous structures that evolved differently and do not have a similar internal structure.
Wings of birds are vestigial structures, but the wing structures of bats are not vestigial.
Wings of bats are vestigial structures, but the wing structures of birds are not vestigial.
Answer:
The wings are analogous structures that evolved differently and do not have a similar internal structure.
Explanation:
The wings have the same function, but birds and butterflies evolved in different ways, so the internal structures are not the same.
How does a change in temperature affect volume?
A.
as temperature increases volume increases
B.
as temperature increases volume decreases
C.
as temperature decreases volume increases
D.
a change in temperature has no effect on the volume of the gas
Which of the following statements is true?
Group of answer choices
A pedigree chart tracks inherited traits, and a Punnett square is used to predict the genotype of offspring.
A Punnett square tracks inherited traits, and a pedigree chart is used to predict the genotype of offspring.
A pedigree chart predicts the percentage of offspring that will have a specific trait, and a Punnett square tracks which organisms are carriers for a specific trait.
A Punnett square tracks family traits, and a pedigree chart identifies the phenotype of the organism.
Answer: It should be the first one.
Answer:
A: A pedigree chart tracks inherited traits, and a Punnett square is used to predict the genotype of offspring.
Explanation:
Pretty self-explanatory. A pedigree chart is designed to track inherited traits, and a Punnett square is definitely used to predict the genotype of offspring
#19 choose the best answer
Answer:
I believe the answer would be D) Meiosis.
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help plsbi dont understand help pls
Answer:
The answer is B.
Explanation:
Digestive system is a system that helps to break down food molecules into simplier substance such as glucose, amino acids, etc. so that it can be easier to be absorb by the blood for other purposes.
Biodiversity is the variety of life in an area that is determined by the number of different species in that
area.
True or false
Answer:
True
Explanation:
Because Bio means life, and diversity means the different species in one area.
A scientist observed a cell using an electron microscope.
The size of the image was 25 mm.
The magnification was × 100 000
Calculate the real size of the cell.
Use the equation:
Give your answer in micrometres.
Answer:
The real size of the cell is 2.5×10^(-4) mm
Explanation:
The formula of magnification is, mag. = image/original. It is given that the size of image is 25mm and the magnification is ×100 000 :
100 000 = 25/original
original = 25/100 000
= 0.00025 mm
= 2.5 × 10^(-4) mm
The finches of the Galapagos are a perfect species to model evolution because it shows that beaks changed as a result of the environmental conditions. Which statement below best explains how one ancestral finch population give rise to 13 species, each with different characteristics?
Question 5 options:
Finches traveled and settled to different islands giving rise to the 13 various finches—one on each island.
Groups of individual finches with particular advantageous traits were naturally selected by the environment, and over many generations evolved into a different species dependent upon environmental factors.
One finch had different offspring which then evolved to the 13 various finches.
Finches were not derived from the one ancestral finch and were all different from the beginning.
Answer:the right option is the second one because this species could be envolted just because of natural selection
Explanation:
The statement that described one ancestral finch population giving rise to 13 species contains distinct attributes that should be that the group of individual finches that should be naturally selected.
What is species?It is the group of the same kind of living things that should below the genus in the scientific classification and should be made up of individuals for generating the offspring with one another. Also, various generations should be evolved into the various species based on the factors of the environment
Therefore, the second option is correct.
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which of the following must happen for a transcript of the lac operon genes to take place?
a.the repressor proteins bind to the dna molecules, and rna polymerase falls off.
b.lactose removes from the system.
c.the repressor proteins bind to the promoter sequences.
d.the repressor proteins falls off the dna molecules, and rna polymerase binds to.
Answer:
a
Explanation:
Lionfish are considered invasive species to the Atlantic Ocean off the coast of Georgia and Florida. They have no known predators and are able to survive on the available food and resources. They have continued to spread since their introduction. Use this graph to answer the question. Which population growth curve best matches the current model of population growth of lionfish on the Atlantic coast of Georgia and Florida? *
A) Line 2 because it shows the population slowing down and then speeding up
B) Line 1 because it shows linear growth of the population.
C) Line 2 because it shows the logistic growth of the population.
D) Line 1 because it the exponential growth of the population.
Answer: D
Explanation:
Nothing is stopping the population
How do the structure of adenine and
guanine differ from the structure of cytosine
and thymine?
Adenine and guanine are purines with a two-ring structure, while cytosine and thymine are pyrimidines with a single-ring structure. This difference is crucial for the consistency of DNA's double helix structure.
Explanation:The structure of adenine (A) and guanine (G) differs from the structure of cytosine (C) and thymine (T) in that adenine and guanine are purines, which have a two carbon-nitrogen ring structure. In contrast, cytosine and thymine are pyrimidines, possessing a single carbon-nitrogen ring structure.
The combination of a purine with a pyrimidine allows DNA to maintain a consistent structural shape, as a two-ring purine pairs with a one-ring pyrimidine, keeping the strands of the DNA helix an equal distance apart.
Which of the following would cause only a chemical change with a sugar cube
Answer:
Which would cause only a chemical change in a sugar cube is heating the sugar cube with acid.
Explanation:
The complete question is:
Jolene wants to experiment with sugar cubes. Which of the following would cause only a chemical change with a sugar cube
Burning the sugar cube with a matchstick .Crushing the sugar cube and dissolving it in water .Heating the sugar cube with acid.The addition of acid to sugar (sucrose) is a known reaction that produces the chemical change of this carbohydrate into carbon, by a process of dehydration.
In the reaction of dehydration of sucrose with sulphuric acid - which is exothermic - the acid extracts water from the sugar molecule, producing gases, such as CO₂ and SO₂, which consumes the acid and converts the sucrose into carbon. The chemical reaction is:
C₁₂H₂₂O₁₁ + H₂SO₄ + 1/2 O₂ ----------→ 11C + CO₂ + 12H₂O + SO₂
Sucrose + Sulfuric Ac. + Oxygen → Carbon + Carbon dioxide + water + sulfur dioxide.
This reaction involves only a chemical change of the sucrose, when converted into carbon.
Which of these can happen to objects in the solar system that do not have the momentum to maintain a stable orbit around the sun? Select the two
correct answers. (1 point)
They can spiral into the sun
They can fall into circular orbits
They can follow erratic orbits that take on different shapes
They can swing around the sun and be ejected outward into space
Answer:
they can spiral into the sun
they can swing around the sun and be ejected outward into space
The two (2) things that can happen to objects in the solar system that do not have the momentum to maintain a stable orbit around the sun are:
A. They can spiral into the sun.
D. They can swing around the sun and be ejected outward into space.
A solar system can be defined as a collection of both the inner and outer planets alongside the celestial bodies such as a moon, that are typically in orbit around the sun.
Basically, the nine (9) planets that are found in the solar system orbiting around the sun include;
Mercury. Venus. Earth. Mars. Jupiter. Neptune. Uranus. Saturn. Pluto.In order for all the celestial bodies and objects to maintain a stable orbit around the sun, they must have momentum and there must be a force of gravity.
Consequently, objects can spiral into the sun if they don't have the required momentum to maintain a stable orbit around the sun. Also, these objects can swing around the sun and then ejected outward into space because of the lack of momentum.
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A marine biologist measured the amount of heat radiated from an aquarium over the course of an experiment. He concludes that the aquarium is an open system. Explain why this conclusion is invalid.
1) An open system does not exchange energy with its surroundings, and the scientist only measured the exchange of heat.
2) An open system does not exchange matter with its surroundings, and the scientist did not measure the movement of matter.
3) An open system exchanges both energy and matter with its surroundings, and the scientist did not measure the movement of matter.
4) An open system exchanges matter but not energy with its surroundings, and the scientist did not measure the movement of matter.
Answer:
4) An open system exchanges matter but not with energy with its environment, and scientists do not measure the movement of matter. I think the one that suits me the best is that I have really thought
Answer:
3) An open system exchanges both energy and matter with its surroundings, and the scientist did not measure the movement of matter.
Explanation:
An open system is a material system in which mass or energy can be lost to or gained from the environment. Therefore, because the marine biologist only measured the amount of heat radiated from an aquarium, and not the movement of matter as well, this conclusion is invalid.
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