The warm surface air of the tropics _______ as it rises, causing it to _______ moisture. At about 30° N and 30° S of the tropics, however, air descends and _______ moisture from the land.

Earth’s large vegetation regions are essentially defined by _______.

Starting at the North Pole and going south, list the order in which you would be likely to find the following biomes: temperate deciduous forest, tundra, tropical rainforest, taiga.

With increasing distance from the shoreline toward open sea, the abundance of marine life _______. With increasing distance from the ocean’s surface toward the ocean floor, the abundance of marine life _______.

The tiny organisms collectively called _______ lie at the base of most marine food webs, thanks to their ability to _______.

An estuary is an area where a stream or river _______.

In the movie The Godfather, Michael Corleone and Enzo the baker stand on the steps outside the hospital where Michael’s father is recovering from gunshot wounds and pretend to be holding guns inside their coats as a means of keeping assassins from entering the hospital and killing Michael’s father. Allowing for some differences between the natural world and human society, what form of mimicry were Michael Corleone and Enzo the baker practicing?

The Everglades in south Florida contain vast expanses of the sawgrass plant Cladium jamaicense. Therefore, in the south Florida Everglades, saw- grass is:

a. a host.

b. a model.

c. a ecological pioneer.

d. an ecological dominant.

e. a mimic.

The world’s first farmers were not human beings but the leaf-cutter ants of the genus Atta. These ants do not eat the leaves they carry off. Instead, they bring them down into their nests, where they process the leaves into a pulp and then spread the pulp onto a fungus that grows only in their nests. The fungus then feeds on the food that has been brought to it and grows, after which the ants harvest the knob-like stalks of the fungus and consume them. What is the mode of interaction between the ants and the fungus in this community?