Refer to the Figure

question 30

Multiple Choice

Refer to the figure.

- Which statement is supported by the figure?

• A) Decomposers at higher temperatures need less moisture to reach peak levels of activity than decomposers at lower temperatures do.
• B) Soils with low water content limit rates of decomposition at all temperatures.
• C) High soil moisture decreases microbial activity only at a temperature of 30°C.
• D) Microbes in soils at 15°C require less soil moisture to reach their peak rate of decomposition than microbes in soils do at 30°C.

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Definitions:

Carbonic Acid

A weak acid formed when carbon dioxide dissolves in water, playing a key role in buffering blood pH.

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air.

Plasma

In vertebrates, the liquid portion of blood; contains nutrients, wastes, salts, and proteins.

Oxyhemoglobin

Compound formed when oxygen combines with hemoglobin.