Answer:
The answer is rocks.
Explanation:
Since the main source of phosphorus is found in rocks, the first step of the phosphorus cycle involves the extraction of phosphorus from the rocks by weathering.
Pumice is a volcano rock that is commonly light enough to float
Answer:
It changes the genetic makeup to produce more yielding plants.
Explanation:
Plant geneticists trying to produce a plant which used all the inputs efficiently in order to produce higher yield with the use of low inputs. C3 plants are inefficient plants because they uses resources not efficiently while on the other hand, C4 plants are those which utilizes resources efficiently means more growth by using less inputs or high conversion power so we can say that the Plant geneticists produce a plant by changing their genetic makeup.
Answer:
False
Explanation:
Radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium which therefore means that radiation doesn't require particles or matter.
Answer: Option II.
B cells and T cells undergo colonial selection after encountering an antigen.
Explanation:
B cells are a type of lymphocytes or white blood cells that produce hormones so as to activate the immune system in other to provide a defence or fight against pathogens.
T cells are lymphocytes immune cells that fight against pathogens in the body.
Both T cells and B cells undergo colonial selection after encountering an antigen. The major difference between them is that T cells
