3.4 Cycles of Matter

The four elements that make up over 95 percent of the body in most organisms are.............................

• oxygen, sulfur, nitrogen, and hydrogen.

• oxygen, carbon, nitrogen, and hydrogen.

Matter moves through an ecosystem in cycles

• True

• False

Chemical and physical processes include the formation of clouds and precipitation, ...................., and the flow of running water.

• “burning” food

• lightning

example of another analogy that could be

used to show the relationship between energy

and the cycles of matter

• wind causing

  a windmill to turn

• a foot pushing a

  bicycle pedal around and around

• all

Earth is a closed system because matter does not enter and matter does not escape. The materials used by organisms cannot be lost; they are recycled.

• True

• False

How might building a new highway affect the cycles of matter?

• trees and other plants are cleared.

• The removal of plants limits the food, energy, and habitats available to other organisms, like animals.

• The removal of plants and animals stops nutrients from being recycled.

• There is no negative impact on the life cycle, there will be a better chance of life.

• It would be possible for there to be natural alternatives

The Two processes that cause water to enter the atmosphere are:

• Evaporation

• Condensation

• Transpiration

• Groundwater:

Chemical and physical processes include the formation of clouds and precipitation, lightning, and the flow of running water

• True

• False

...........are the chemical substances that an organism needs to survive

• Nutrients

• lightning

• precipitation

• clouds

Water and nutrients pass through organisms and the environment through .......................................... cycles which carry carbon, nitrogen, and phosphorus through the biosphere and are especially vital for life

• biogeochemical

• biochemical