What created oxygen in the early atmosphere

Photosynthetic bacteria

Asteroids hitting the earth

plankton

Volcanic eruptions

forests

Who studied the role of RNA in protein synthesis, specifically in the bacteria E. coli.?

How many chromosomes does a child inherit from his or her parents

An issue for chesapeake planters was that the effect of tobacco farming on soil led to:

Which phrase if placed in box X would correctly complete the flowchart shown below?

Describe the process of cell growth and cell division

When energy is realesed during a chemical reaction what is it called?

The atmosphere contains tiny solid particles called

An uncomfority represents

Neurotransmitters are secreted into a specialized junction known as the: (a) Synapse (b) Synaptic vesicles (c) Ligand channel (d) Axon

Birch bolete is a fungus that normally grows on the roots of birch trees in New York State. During the life of the fungus and the birch, each organism receives nutrients from the various biochemical processes of the other.