What are surface appendages that allow a bacterium to stick to a surface?

The following image is of a diatom. it lives in water and gets food from photosynthesis. it is encased in a hard shell made of something similar to glass or sand . a diatom is a(n) because it has a) multi-celled organism; specialized parts. b) vertebrate; a skeleton. c) insect; an exoskeleton. d) single-called organism; only one cell.

Environmental impacts on evolution : mastery test

Asap. this question is 100 points if you answer it question: describe the basic relationship between ocean depth and temperature seen in the graph