Answer:
Because of their need for high pressure, the kidneys also help control blood pressure by producing a blood vessel-constricting protein (angiotensin) that also signals the body to retain sodium and water.
Answer:
Cells can be specialized for specific functions.
Explanation:
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Description. A grassland and shrubland is a plant community characterized by vegetation dominated by shrubs and grasses between 1 and 3 meters (m) in height.
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
Explanation:
Genetic variation is increased by meiosis
Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occurs during prophase I
