You observe 4 cell samples under a microscope. identify which one belongs to a plant. a. sample 2 has mitochondria and chloroplasts, a cell wall and a large vacuole. b. sample 3 has mitochondria and a nucleus but no cell wall. c. sample 1 has a cell wall but no nucleus. d. none of these.

Which of the following are causes of coastal erosion? check all that apply. beach grasses and other plants trap windblown sand. wave action carves away the coastline. groundwater under pressure is forced to earth’s surface. artificial structures stop the natural flow of sand along the coast. underground caves collapse as bedrock is dissolved.

Cells are adapted to preform specific functions. which of the following terms refers to this capability?

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above