On what basis are rocks classified into three main groups?
A. their age
B. their color
C. their formation
D. their texture

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.

Why does it matter if osmosis is put into a “scab” or a “nosebleed? ” where would that leave him?

Drag each description to the correct location on the image. not all descriptions will be used. describe the parts of a comet. the frozen part of the comet the atmosphere of gases and dust formed when the nucleus vaporizes tail made of small, solid dust particles tail made of ions that appears to point away from the comet's orbit