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.