Which is not a characteristic of life?
a. composed of cells
b. maintains homeostasis
c. sensitivity
d. uses energy

Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.

The basic kind of life cycle found in the simplest animals is: haplontic or diplontic