Chapter 6

Which of the following describes the aphotic zone in a aquatic ecosystem?

A bog is a wetland that

Which biome would have the lowest net primary production?

In lakes and ponds, this zone is the area farther from the shore

Which ecosystems are considered standing freshwater ecosystems?

Marshes, swamps, and bogs are examples of

The very bottom of a body of water

Which zone of an aquatic ecosystem tends to have the highest temperatures?

Areas nearest a river's course that are flooded periodically are said to be within the river's

Uppermost layer of an aquatic ecosystem with enough sunlight for photosynthesis to occur

A group of ecosystems that share similar abiotic and biotic conditions

Rivers flow into oceans, mixing fresh water with saltwater, brackish ecosystems called __ occur

To help them survive in the tundra, caribou have various adaptations, such as

Ecologists use similarities between ecosystems to classify them into broad categories called

Ecosystem spread between the uppermost reach of the high tide & the lower limit of the low tide

These trees in tropical dry forests lose their leaves & stop photosynthesis part of the year

Type of large brown algae that grows from the ocean floor upward to the surface?

In which ocean zones do crabs, mussels, anemone, barnicles, and sea stars live?

What percentage of Earth's surface is covered in water?

Why do shorter trees &plants in the understory of tropical rain forests have large flat leaves?

In temperate rain forests, trees like cedars & spruces don't lose their leaves. They're called

Day-to-day conditions in Earth's atmosphere, such as "sunny and humid," describe

Areas of land that are flooded with water at least part of the year

A deep, sleeplike state that an animal enters for most of the winter in temperate forests

The vertical flow of cold, nutrient-rich water toward the surface