The simplest structures that can carry out all of the activities characteristic of life are: A. cells.
B. atoms.
C. molecules.
D. crystals.

Most of earth’s fresh water is found in oceans and seas stored in glaciers and ice caps groundwater stored beneath the surface found in lakes, rivers, streams, and reservoirs

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?

What element is able to combine with itself and hydrogen to form large molecules ?