Variation within a population is caused by *
pollution

Which statement best explains how cellular respiration maintain homeostasis in animals? it maintains body temperature by absorbing energy. it breaks glucose into energy required by the organism. it speeds up metabolism by making oxygen. it produces energy from hormones present in the organism.

The probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder is

What are the formed elements (cell or parts of cell) in blood and what are their functions ?