What abiotic factors would ecosystems near the surface of the ocean have than those found far below the surface?

Why is excretion necessary to maintain homeostasis?

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.

Me with biology endocrine system crossword also image left i need with hw