BIOA02H3 Chapter : Ecosystems

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15 Apr 2011

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Earth is a closed system with respect to matter open system with respect to energy. Over very long time scales, most materials that cycle through the four compartments: exchange materials with their surface, respond slowly to inputs, receive material from land in river runoff end up in the oceans. the atmosphere only at. In lakes, nutrients taken up by aquatic organisms end up as part of the sediment. Surface waters of lakes become depleted in nutrients. Turnover in deep lakes is controlled by temperature. In summer, surface waters warm, and the less dense water layer floats over colder, denser bottom water. The stratosphere extends out to about 50 km. Most materials enter stratosphere at the intertropical convergence zone. A layer of ozone in the stratosphere absorbs most of the uv radiation from the sun. www. notesolution. com. Most global air circulation and all water vapor is in the troposphere.

Related Questions

Which of the following is NOT one of the uses of fungi?

Select one:

a. As a source of antibiotics.

b. To make drinks, like beer.

c. To produce fabrics like cotton and linen.

d. To make food, like bread.

e. As a direct food source: mushrooms, for example.

How do fungi get nutrients?

Select one:

a. They ingest organic material, break it down internally, and absorb the released nutrients through their digestive system.

b. Fungi use each of these methods to get nutrients.

c. They secrete enzymes that break down dead matter or living organisms and absorb the released nutrients.

d. They receive nutrients from other organisms that trade the nutrients for protection from pathogens.

e. They produce their own by photosynthesis.

Why is fungi's role as biodegraders so important to ecosystems?

Select one:

a. It transfers the energy from sunlight into sugars.

b. It provides nutrients and oxygen to the ecosystem.

c. It protects plants from harmful viruses and bacteria.

d. It keeps the level of prey animals down so they do not overwhelm the ecosystem.

e. It recycles and reuses organic molecules so they are not wasted.

9. Compare and contrast different aquatic and terrestrialenvironments.

10. Explain how energy or nutrients travel through an ecosystemat small scale and large scale.

blushgiraffe788

Clear-cutting and logging of tropical rainforests cause issues with excess carbon dioxide in the atmosphere and low rainfall. The land that is cleared and used for farming become depleted of nutrients and thus are useless. Do we have any right to tell other countries how to manage their lands, such as rain forests? If we explain the consequences of clear-cutting the rainforests but that government decides to continue with the process, should we interfere?

BIOA02H3 Chapter : Ecosystems

BIOA02H3 Full Course Notes

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