Revision 1

A rapid harmful increase in the amount of algae found in water.

• Water pollution
• Eutrophication
• Aquatic toxicity
• Algal bloom

The act of saving, protecting, or using resources wisely.

• Exploitation
• Preservation
• Utilization
• Conservation

Which of the following is not one of the "three Rs" of conservation?

• Reduce
• Restore
• Recycle
• Reuse

Any harmful substances that affect Earth’s resources.

• Pollution

• Ecosystem services
• Renewable energy
• Natural resources

……….………….. forms when harmful gases caused by pollution such as sulfur dioxide and nitrogen oxide  are released into the atmosphere and react with precipitation.

• Ozone layer depletion
• Rainwater
• Smog
• Acid rain

The process of water being stored on Earth's surface, in the ground, or as a water feature.

• storage

• Water purification
• Water evaporation
• Water filtration

The process of weathered rock moving from one place to another.

• Erosion
• Weathering
• Deposition
• Sedimentation

The act of saving, protecting or using resources wisely.

• storage

• Pollution

• Conservation

• reservoir

Organisms that cannot make their own food.

• Producers
• Consumers

• Photosynthesizers
• Autotrophs

The path that energy and nutrients follow and the feeding relationships among living things in an ecosystem.                                                           

• Energy cycle
• Nutrient cycle
• Ecosystem dynamics
• Food chain