Leaves are important plant structures because they a)give the plant structure and support b)absorb water from the soil c)are the main sites for photosynthesis d)have cells that store water when it rains

Which element provides strength to the exoskeleton of clams and oysters

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.

When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection