Which of the following is one of the most abundant elements in all living things?
A. Helium
B. Oxygen
C. Silver
D. Gold

Which of the following best describes homeostasis? a. keeping the internal environment in a stable state b. keeping the external environment in a stable state c. beneficial characteristics resulting from mutation d. reproduction that results in offspring identical to the parent.

Secondary pollutants are more harmful than primary pollutants. select the best answer from the choices provided ot of

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.