_____ is the maximum number of individuals of a species that an environment can sustain.

True or False:  The guard cells regulate the passage of carbon dioxide out of the cell and oxygen into the cell.

Which type of tundra does not have permafrost?

_____ is the embryonic root of a monocot.

True or False:  A natural disaster would be a density-independent factor.

____ is warming of the Pacific Ocean waters.

_____ species is a species that is especially sensitive to disturbance and can be monitored to assess the health of a habitat.

Seeds are mature _____; fruits are mature ______.

Topsoil would be found in which soil horizon?

What was the reactant for fermentation