In recent history, humans have influenced which parts of life on Earth? A. Almost none of it.
B. Life on land only.
C. Virtually all life on Earth.
D. Life in cities only.

Dwarf galaxies are select one: a. relatively rare. b. not very bright c. mostly spiral shaped. d. none of these.

Plz ! a frog has a genetic mutation in skin cells that causes part of its skin to turn orange the frog will not pass this genetic mutation onto its offspring because, a. the offspring will inherit skin cells from the other parent. b. mutated skin cells cannot divide and produce daughter skin cells. c. skin cells do not contribute genetic material to sex cells. d. parents do not contribute genetic material to their offspring.

Adistinctive characteristic of mammals that is not observed in other vertebrates is