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3 years ago

Which of the following best describes a benefit of one type of nonrenewable energy? (2 points)

1 answer:

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Natural gas and petroleum, upon burning, produce carbon dioxide. If you look at methane and the such, these hydrocarbons react with oxygen forming carbon dioxide and water.

The claim that petroleum is not carbon based is downright wrong. Methane is a hydrocarbon, and petroleum is a combination of complex hydrocarbons with varying chains of carbon atoms, some having 6 carbon atoms, others 60, giving it the viscous feel.

Coal deposits may be found in many places, but are still scarce and poses A LOT of risks, for example children were often harmed during the Industrial Revolution as a result of breathing in too much of the dirty air. Even now, coal mining is not without risk.

The only right answer then is the last one, where nuclear power does not produce air pollution. It relies on nuclear fission, where upon the splitting of uranium atoms they release energy, and this energy is harnessed by scientists for the betterment of all.

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All of the following are included in the forebrain except the

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A. Cerebellum

By far the largest region of your brain is the forebrain (derived from the developmental prosencephalon), which contains the entire cerebrum and several structures directly nestled within it - the thalamus, hypothalamus, the pineal gland and the limbic system.

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3 years ago

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3). Which process can result in increased biomass for a plant: cellular respiration or photosynthesis? Where does the mass come

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Photosynthesis results in increased biomass for a plant. In photosynthesis, carbon dioxide and water yield glucose and oxygen. So, the carbon dioxide and water are taken in and are create a glucose. Glucose can be transformed into organic molecules, such as starch, which will increase biomass.

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3 years ago

Describe how alveoli are adapted for gas exchange( 4 marks)

SashulF [63]

Answer:

they give the lungs a really big surface area. they have moist, thin walls (just one cell thick) they have a lot of tiny blood vessels called capillaries.

The walls of the alveoli are only one cell thick. This makes the exchange surface very thin - shortening the diffusion distance across which gases have to move. Each alveolus is surrounded by blood capillaries which ensure a good blood supply.Adaptations of the alveoli:

Thin walls - alveolar walls are one cell thick providing gases with a short diffusion distance. Moist walls - gases dissolve in the moisture helping them to pass across the gas exchange surface. Permeable walls - allow gases to pass through.

Explanation:

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2 years ago

What happens directly after metaphase

alekssr [168]

Answer:The third phase of mitosis, following metaphase and preceding telophase, is anaphase. Since the sister chromatids began attaching to centrosomes on opposite ends of the cell in metaphase, they're prepped and ready to start separating and forming genetically-identical daughter chromosomes during anaphase.

Explanation:

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3 years ago

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You have been hired as a field assistant for a researcher interested in the evolution of flower characteristics in orchids. Comp

chubhunter [2.5K]

Answer:

$\text{Present a flower with one characteristic changed to the normal pollinator. }$ $\text{As a control, present a flower with no characteristics changed to the normal pollinator}$

$\text{Record any measure of pollination success}$

$\text{Repeeat for flowers with other characteristics changed}$

$\text{Analyze the data to determine which altered characteristics affect pollination }$ $\text{success the most. This characteristic will be the result of the experiment.}$

Explanation:

The missing information is attached below.

$\text{Present a flower with one characteristic changed to the normal pollinator. }$ $\text{As a control, present a flower with no characteristics changed to the normal pollinator}$

For the control, you'll need something you're already familiar with. In this scenario, a normal flower with no changes in characteristics is the best control. And if no data is accessible, you still have data on the success rate of a typical flower, which can be used as a guideline. And, for the initial configuration, you can only adjust one characteristic so it would be easier to maintain track of and analyze the data gathered.

$\text{Record any measure of pollination success}$

Since the aim of your experiment is to examine the influence of flower characteristics on pollination performance, you should keep track of the active pollination events. To have more accurate results, this would require listing the total number of plants that were to be pollinated.

$\text{Repeeat for flowers with other characteristics changed}$

Once you've completed the initial examination, you'll need to run tests on various characteristics to see whether they have some impact on pollination performance. To see the importance of different characters on pollination, change only one trait in flowers; if you'd like to research combined results, create pairs and change them together.

$\text{Analyze the data to determine which altered characteristics affect pollination }$ $\text{success the most. This characteristic will be the result of the experiment.}$

Your outcome is also the one that has gotten the most constructive or negative reviews. If some changed characteristic significantly affected the number of pollination efficiency, that is your outcome, because that is what you can mention as a good result and pollination enhancer.

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3 years ago