Answer: B. all the nitrogen obtained by animals come from plants.
Explanation:
Animals are unable to use inorganic bacteria until plants absorb it and then animals get it from the plants so in effect, all the nitrogen obtained by animals comes from plants.
Plants absorb nitrogen in the form of Nitrates which were fixed by bacteria from Nitrites which were further fixed from Ammonium which was fixed from atmospheric Nitrogen all by bacteria.
Answer:
<em>yellow to red is an acidic solution
</em>
<em>blue to violet is bases
</em>
<em>green color is a solution is neutral</em>
Explanation:
The vertebrate endoskeleton is internal while an arthropod's exoskeleton is not
The correct answer is c. Genetic Variation. Bacteria are very numerous, ad random mutation of bacterial DNA generates a wide variety of change, including resistance.
Answer A. If the tectonic plates continually move then they change earth’s crust constantly.
