Answer:
white blood sells
Explanation:
they in ur blood and helps fights off diseases and heal cuts
A species <span>a group of organisms that have similar traits and are able to produce fertile offspring.
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Answer:
True
Explanation:
During contraction of skeletal muscle fibers, the thin filaments slide inward toward the A band's center as a result of cycles of crossbridge binding and bending.
Answer:
it will be the answer B. scientists discover new elenents.
During an influenza outbreak, many people get infected and die. However, part of the population acquires immunity and survives. This is due to variations in the genotype and phenotype among individuals in the population. Probably a particular phenotype confers resistance to influenza. Therefore, this population is able to grow and develop to maturity and reproduce. Their genes are therefore passed over to subsequent generations.