Is a compound containing carbons, hydrogens, and hydroxyl groups (oh) that serves as the "backbone" for various lipids?

Which type of fossil does this image depict?

Apush or pull that moves or changes and object when to objects touch

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.