Which of the following statements correctly describes conditions on a glacier moraine during the reign of pioneer species?

The North American pronghorn looks and acts like the antelopes of Africa. But the pronghorn is the only survivor of a family of mammals restricted to North America. Propose a hypothesis to explain how these widely separated animals came to be so much alike.

A field contains 950 kg of plant material. How many kilograms of tertiary consumers could be supported?

Why does succession of communities occur?

What is the current view of biological communities?

When equilibrium is reached on an island, __________.

What are two key factors in species richness equatorial–polar gradients?

What happens to the number of species in a community as the area of that community increases?

The potential evapotranspiration is determined by __________.