What would result from a mistake in the order of the DNA nucleotides during DNA replication? A. Birth Defect

B. Mutation

C. Nothing

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 units ate used to measure both velocity and speed? check all that apply

Are the earth's ocean floor and continents the same age geologically? why or why not?