All living things use energy and release gas as a waste product. What cycle explains the circulation of these gases?

• Water cycle

• Oxygen-Carbon cycle

• Nitrogen cycle

• Plant cycle

Which part of the water cycle includes water vapor gas changing to a liquid?

• condensation

• evaporation

• precipitation

• transpiration

How do animals get nitrogen that is stored in the soil?

• Animals do not take in the nitrogen stored in the soil.

• Bacteria change the nitrogen into a gas that the animals breathe.

• Plants absorb the nitrogen from the soil and animals can eat the plants.

• The animals can eat the soil and absorb the nitrogen through their digestive system

James is observing a lake. He wonders how the water in the lake is included in the water cycle. Place the stages of the water cycle in order, starting with the water in the lake.

1) __________________

2) __________________

3) __________________

4)__________________

1. A) Large water droplets fall to the ground from the clouds.

2. B) Water vapor cools and condenses on dust particles forming clouds.

3. C) Energy from the sun causes the water in the lake to evaporate.

4. D) Water droplets combine in the clouds to form larger droplets.

• C,B,D,A

• A,B,C,D

• B,C,A,D

• C,D,A,B

Mr. Hernandez's science class learned that green plants use sunlight, water, and carbon dioxide to make their own food and release oxygen in the process. How can the class explain how animals complete the oxygen-carbon cycle?

• Animals take in the oxygen, but do not release gas as they use energy.

• Animals take in carbon dioxide and use it to make food.

• Animals take in oxygen and release nitrogen as waste. .

• Animals take in oxygen and as they use energy, carbon dioxide is released as waste

Rain water that flows over Earth's surface is called ________ . This water gathers in lakes and rivers.

• runoff

• groundwater

• ice caps

• streams

The ability to do work or change something ________

• respiration

• transpiration

• precipitation

• energy

The place in an ecosystem where an organism lives ______

• niche

• habitat

• trees

• soil

The role that an organism plays in an ecosystem

• habitat

• Niche

• abiotic

• biotic

An invasive species can harm __________

• environment

• the economy

• human health

• all of the given