Which of the following statements is true?
viruses are much bigger than bacteria.
viruses are cells with either rna or dna.
viruses are bundles of genetic material enclosed in a capsid.
both viruses and bacteria are living organisms.

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.

Variety of living organisms; includes genetic, species, and ecological types.

The negative impacts of nonnative species generally outweigh the positive impacts