Answer:
Once nitrogen is converted into compounds like ammonium and nitrate, these can be taken up from soils by plants and then the nitrogen can be used to form macromolecules like proteins and nucleic acids (DNA and RNA). ... It is an important part of many cells and processes such as amino acids, proteins and even our DNA.
Explanation:
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Like the right atrium, the left atrium also has valve in its auricle.
<h3>What is heart?</h3>
The heart is defined as the major organ of the cardiovascular system which is used by the body to pump blood through out the cardiovascular system.
The heart is made up of the following:
Both the left and right atrium are separated from the ventricle by the valves which helps to prevent the back flow of blood.
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Answer:
2. temperature
Explanation:
The independent variable is the variable that you change. Since you are changing the temperature to find bacteria growth, bacteria growth is the dependent variable and ph level is the control variable.
Answer:
the roots are the organs of the plants
Explanation: