Which part of the immune system is produced in the bone marrow and circulates through the blood to destroy germs?

a.
red blood cells

b.
white blood cells

c.
lymphocytes

d.
fibrin

Compare and contrast the adaptations of free-living flatworms and parasitic flatworms

Will mark brainliest if correct/available! which of the following statements is true? all plants need flowers to sexually reproduce. sexually reproduced offspring are identical to their parents. fertilization always occurs inside the female's body. a body cell has twice the number of chromosomes as an egg cell.

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases