The Water Cycle
Water surrounds 70 percent of the Earth.
True or False
What is True?
page:713
All organisms contain what.
What is carbon?
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People who make things or products are called what.
What are producers?
page 724
All living things need what to survive.
What is oxygen?
page 717
Cycles between the Earth and what.
What is atmosphere?
page 715
Water is 97 percent of what type of water.
What are oceans?
page 713
Carbon dioxide is released into what.
What is atmosphere?
page 718
producers make their own food from materials in the what.
What is the environment?
page 724
Two important substances in life.
What is carbon dioxide and water?
page 717
Nitrogen is an important part of what.
What is DNA?
page 715
The three processes of the water cycle.
What are condensation, evaporation, and precipitation?
page 713
Carbon dioxide produces energy-rich _____________ .
What are sugars?
page 719
A series of chemical reactions that convert light energy, water, and carbon dioxide into food energy, molecules, and glucose, and give off oxygen.
What is photosynthesis?
page 724
Oxygen is released in more than what percent in the environment.
What is 50 percent?
page 717
The atmosphere is mostly what.
What is nitrogen?
page 716
The first step of the water cycle.
What is evaporation?
page 714
Carbon is released as a what.
What is byproduct?
page 719
What is the process by which producers use chemical energy in matter rather than light energy and make food.
page 724
What is chemosynthesis?
The Earth's atmosphere increased or decreased.
What is increased?
page 717
Animals take in other organisms when they what.
What is eating other plants and other organisms?
page 716
The definition of condensation.
What is the process by which water vapor changes into liquid water?
page 714
Carbon dioxide absorbs what kind of energy.
What is thermal?
page 719
Three examples of photosynthetic bacteria.
What are grass trees and alage?
page 724
Scientists estimate the unicellular organisms in water, which are called what.
What is phytoplankton?
page 717
What is the process that changes atmospheric nitrogen into nitrogen compounds that are usable by living things.
page 716
What is nitrogen fixation?