Ch. 20: Matter & Energy in the Environment

What process is shown in this figure?

• decay
• nitrogen fixation
• photosynthesis
• transpiration

T/F: Clouds are formed when water vapor evaporates on smoke, dust or other small particles making them "air sponges" holding water.

• True
• False

As carbon compounds over time it becomes fossil fuels. What of the below items is a fossil fuel?

• nuclear power
• oil
• wind
• wood

Without this, Earth could become too hot or cold to support life as we know it.

• geothermal energy
• the ozone layer
• global warming
• the greenhouse effect

Why do many people feel that slowing our use of fossil fuels would slow global warming?

• Fossil fuels produce smog in the atmosphere.
• Burning fossil fuels produces carbon dioxide (CO2), a greenhouse gas.
• Mining fossil fuels produces heat.
• Fossil fuel uses damages the ozone layer.

What is formed when decomposing organisms are exposed to pressure, heat, and bacteria for hundreds of millions of years?

• fossil fuels
• greenhouse gases
• nitrogen
• oxygen

Where would you find organisms that produce food by chemosynthesis?

• in a deep part of the ocean
• In desert biomes
• in deciduous rain forest biomes
• in treetops

One possible result of increased carbon dioxide (CO2) in the atmosphere is ____________.

• an increase in the number of carnivores on Earth
• a rise in average temperatures on Earth
• a decrease in the amount of water on Earth
• a decrease in the amount of nitrogen in the soil.

What are living things that make their own food?

• carnivores
• consumers
• omnivores
• producers

The gases that surround Earth are called __________.

• the core
• respiration
• the atmosphere
• habitat