Which of these body systems transports glucose and other substances in the blood to the cells of the body?

A) Circulatory system
B) Endocrine system
C) Digestive System
D) Reproductive system

The rate at which molecules water and oxygen can enter a cell is determined by the-

Consider darwin's first writings on the theory of natural selection. an important point of darwin's essay on the principle of population, written in 1798, was a peer's observation that in nature plants and animals produce far more offspring than can survive, this observation can be attributed to a) charles lyell. b) thomas malthus. c) jean-baptiste lamarck. d) johann friedrich meckel.

Which factor that affects biodiversity?