What is the oldest known organism based on fossil record.

A) bacteria

B) viruses

C) Cyanobacteria

D) fossils

Which statement correctly identifies structures 1 and 2 in the diagram?

Suppose a cell is placed in a large container of water with a very low solute concentration.

What level of proteins are amino acids

What are two ways carbon returns from animals into water

Cavendish bananas are a popular species among banana growers because they're predictable. All of these bananas are grown to have the exact same genetic structure. How's this possible? They grow in the same ecosystem.

Glycine is what type of monomer?

What two characteristics played a role in reproductively isolating ground finches?

How much waste is in the Pacific Ocean

Polaris, the North Star, is almost always visible in the same location because

In two communities of similar size and age structure (A and B) there were outbreaks of viral illness (virus A in community A and virus B in community B), both of which were traced back to a single source.