Answer:
Biologists study life at all levels of organization and complexity:Atoms
Genes
Atoms
Molecules
Cells
Tissues
Organs
Organisms
Explanation
Populations
Communities
Ecosystems
Earth
Solar Systems
Galaxies
They can also study specific things within those classifications, such as specific organs, the effects of pollution on ecosystems, etc.:
The vapor rises until it reaches a low enough temperature and pressure to condense water vapor into water droplets and form a cloud. When vapor condenses into liquid or solid particles, it loses some of its energy to the air.
Hope this helps
Increased hunger, sleeping, increased appetite, an increase of bones and muscles, and growing pains.
I'm not sure but I think it's B
Phytoplankton is the producer in ocean ecosystems.
