Reference no: EM13769435

1.In terms of numbers of plants and animal species (biodiversity), the world's richest terrestrial ecosystems are the
tropical deserts.

• tropical rain forests.
• boreal forests.
• temperate forests.
• temperate grasslands.

2. The hydrologic cycle involves _____.

• the movement of all gases

• the cycling of ground water
• the cycling of all water
• the cycling of air masses
• the cycling of nitrogen dioxide

3. All of the following are true about an ecosystem except

• it is made up of living and nonliving environments.

• it can only be located in the oceans.
• it can be man controlled or natural.
• it is a delicate balance between living and nonliving members.
• it has energy and chemical materials flowing in cycles.

4. Photosynthesis is

• a process through which green plants make their own food.
• part of a hydrologic cycle.
• a part of the water cycle.
• the third stage of a food chain.
• the process through which animals manufacture their food.

5.  The three major biotic components of an ecosystem structure are producers, herbivores, and carnivores.

• producers, consumers, and decomposers.
• plants, animals, and climate.
• consumers, bacteria, and decomposers.
• temperature, moisture, and light.

6.  An anthropogenic (human produced) process that returns carbon to the atmosphere is
wild fires.

• volcanic action.
• photosynthesis.
• weathering of rock.
• fossil fuel combustion.

7. Tropical forest destruction and degradation results from unsustainable, small-scale farming and cash crops farming.

• cattle ranching and commercial logging.
• mining operations and oil drilling.
• economic growth and development.
• All of the above

  Which of the following is NOT an important element in the structure of living organisms?

• Carbon
• Aluminum
• Hydrogen
• Nitrogen
• Phosphorus

7.People have had great influence on the biological diversity in their surrounding environment as a result of hunting.

• habitat destruction.
• introduction of non-native species.
• pollution of the environment.
• All of the above

 8. Fossil fuels are formed by the compression of rocks.

• the decay of dead organisms over millions of years.
• volcanoes.
• the decay of city sewage.
• the decay of dead organisms over many decades.