Why do organisms have to compete for resources

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.

Which term describes a normal value for something in the body? a. homeostasis b. set point c. feedback loop d. integration center

The basic types of tissue in the human body are