Atestable idea about a set of observations or natural phenomenon.

question 4 options:

observation

hypothesis

theory

graph

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

The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -