Cycles of Matter

The earth's ability to maintain its balance indefinitely is known as ___________.

Biogeochemical cycles trace the flow of matter through the earth's atmosphere, but not through its crust.

• True

• False

Which of the following is compatible with a biblical worldview?

• God wants us to use the Earth's resources without worrying about the future.

• We should not work to save endangered species because of the survival of the fittest.

• Checks and balances in Earth's processes maintain a designed order for the earth.

Water exits the leaves of plants through a process called ___________.

• photosynthesis

• evaporation

• transpiration

Most free oxygen on earth is produced mostly by _______.

• fungi

• plants

• bacteria

Carbon in the atmosphere is produced ONLY by bacteria, animals and humans.

• True

• False

Name a biogeochemical cycle.

_______ can be fixed by certain bacteria in the roots of legumes and in the soil.

• carbon

• oxygen

• nitrogen

This is the conversion of the inorganic nitrogen to usable forms.

• ammonification

• nitrification

• denitrification

• nitrogen fixation

It is an idea that small changes can have drastic effects.

• sustainability

• cause and effect

• butterfly effect