What is the current view of biological communities?

Lyme disease is caused by infections of the bacterium Borrelia burgdorferi (stained blue in inset, among red blood cells) which is transferred to humans via blood-sucking bites from the tick, Ixodes scapularis. Lyme disease can cause flu-like symptoms in the short term and more serious illnesses in the long term, if not treated. Why is Lyme disease on the rise in eastern North America?A letter to the editor in a local newspaper asserts that 'we cannot afford to preserve natural forests, because we need to use these resources to help humans.' How could you respond to this comment in terms of Lyme disease?

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?

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

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?