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Leokris [45]
2 years ago
14

A student is setting up a model to study the carbon cycle and natural sources of carbon dioxide. They create a microenvironment

that contains soil, leaf debris, an earthworm, heterotrophic bacteria, and a sun lamp. What natural source of carbon dioxide and major metabolic process was left out of the model?.
Biology
1 answer:
Alex Ar [27]2 years ago
8 0

The natural source of carbon dioxide that was left out is the calcareous shells of organisms. The major metabolic process that was left out is respiration.

<h3>What is carbon dioxide?</h3>

Carbon dioxide is one of the gases that cycle around in the universe. It is an integral part of the carbon cycle. The carbon cycle is a model that depicts the movement of carbon in the ecosystem.

The natural source of carbon dioxide that was left out is the calcareous shells of organisms. The major metabolic process that was left out is respiration.

Learn more about carbon dioxide: brainly.com/question/3049557

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Cells must move materials through the _______ and throughout the ______ to maintain _______. Movement of substances is regulated
Irina18 [472]

Cells must move materials through the {membrane} and throughout the {cytoplasm} to maintain {homeostasis} Movement of substances is regulated because membranes are {semi} permeable. Membranes are {phospholipid} bilayers that contain embedded {proteins} The cells external environment and cytoplasm are aqueous, meaning that solutes such as {salt}are dissolved in a solvent called {water} Water may travel slowly through the membrane by {osmosis} or quickly through protein channels called {aquaporins}

6 0
2 years ago
You work for a company that manufactures food products. a new "wonder food" contains only carbon, oxygen, and hydrogen. at this
kvasek [131]

Answer:

d

Explanation:

<em>The correct answer would be that the food could only be made of carbohydrates.</em>

<u>Proteins contain other elements such as nitrogen and sulfur in addition to carbon, hydrogen, and oxygen while nucleic acids and triglycerides contain phosphorus in addition to carbon, hydrogen, and oxygen.</u>

The only chemical substance that contains carbon, oxygen and hydrogen is carbohydrates.

Correct option: d

5 0
2 years ago
What do you mean by white matter?
Harman [31]
White matter is the slightly more pale tissue in the areas of the brain and spinal cord. It consists of nerve fibers with their myelin sheaths (the fatty substance that surrounds and "protects" the axon.
4 0
3 years ago
Compare the solar radiation received in the Tropics with that of the Earth's Polar Regions. What is the difference?
Mariulka [41]

Answer:

The regions near the topic receive more sunlight compared to those of the equator.

4 0
2 years ago
True of false evolution and adaptation are the same
Helen [10]

Answer:False they re not the same

Explanation:

Evolution is not the same as adaptation or natural selection. Natural selection is a mechanism, or cause, of evolution. Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations.

4 0
3 years ago
Read 2 more answers
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