Atmospheric CO2 + Particulates

Which of the following sources should be examined in a study to determine the impact of a geologic source on levels of in the atmosphere?

A) Photosynthesis

B) Cellular respiration

C) Decomposition

D) Volcanoes

D) Volcanoes

Scientists have been monitoring in the atmosphere from Mauna Loa in Hawaii since 1958. Which of the following units is used by scientists to measure in the atmosphere?

A) Dobson units

B) Percent saturation

C) Parts per million

D) pH

C) Parts per million

A student is setting up a model to study the carbon cycle and natural sources of carbon dioxide. They create a microenvironment that contains soil, leaf debris, an earthworm, heterotrophic bacteria, and a sun lamp. What natural source of carbon dioxide and major metabolic process was left out of the model?

A) There is no representation of decomposition in the model environment.

B) There is no representation of cellular respiration in the model environment.

C) There is no representation of photosynthesis in the model environment.

D) There is no representation of ingestion in the model environment.

C) There is ddno representation of photosynthesis in the model environment.

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