Which Is the Break-Even Point Between the Production and Consumption

question 84

Multiple Choice

Which is the break-even point between the production and consumption of organic material?

• A)Net primary productivity.
• B)Compensation point.
• C)Net photosynthesis.
• D)Free air CO2 enrichment.

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Definitions:

Active Transport

The movement of molecules across a cell membrane from a region of lower concentration to higher concentration, requiring energy.

Uric Acid

A waste product formed from the breakdown of purines, excreted in urine.

Ammonia

A compound of nitrogen and hydrogen with the formula NH3, it is a colorless gas with a characteristic pungent smell and is used in many industrial processes.

Spiders

Arachnids distinguished by their ability to spin webs using silk produced from spinnerets at the rear of their abdomen.