What gas important to life was absent from earths earliet atmosphere A methane B. nitrogen C. oxygen D. carbon dioxide

Moving molecules in and out of the cell is an important role of what?

List the 3 steps of cellular respiration in order from beginning to end

How do you call an organisms position in a food chain, which is determined by its feeding relationships?

You are monitoring coral growth on a specific site for several months. Over time, you notice that some of the coral colonies are beginning to turn white and die.

Which are nonvascular plants

When so few members of a species reamin that it can no longer play its role in the biological communities where it is found, the species has undergone?

Describe what type of macromolecule lactose is and what the monomer of the macromolecule is

When Santos stands in a swimming pool and looks at his feet, his legs appear to be bent. Which is the term for this phenomenon? A) diffraction B) dispersion C) reflection D) refraction

What triggers pfiesteria change from a harmless algae feeder to a toxin producing fish killer?

Antibodies are made when animals detect a foreign antigen. All mammals carry albumin in their blood. How was a rabbit antibody against albumin created? Was this lethal to the rabbit? Explain you reasoning.