Cats and Dogs
Swift
Don't Strike Twice
100

This process happens when the sun heats up water in rivers, lakes, or oceans and turns it into water vapor.

What is evaporation?

100

The gas that animals need to survive.

What is oxygen?

100

This process converts nitrogen gas (N₂) from the atmosphere into ammonia.

What is nitrogen fixation?

200

 This is the process where water vapor cools and changes back into liquid water, forming clouds. 

What is condensation?

200

A gas that is essential for photosynthesis but is a waste product for animals.

What is Carbon dioxide?

200

The process where ammonia is converted into nitrites and then nitrates.

What is nitrification?

300

This term describes any form of water—rain, snow, sleet, or hail—that falls from the sky.

What is precipitation?

300

Part of the plant takes in carbon dioxide from the air.

What are leaves?

300

The return of nitrogen to the atmosphere by bacteria is called this.

What is denitrification?

400

This is the process by which water from plants returns to the atmosphere.

What is transpiration?

400

Process in plants that uses carbon dioxide and produces oxygen.

What is photosynthesis?

400

This process happens when decomposers break down dead organisms and release ammonia into the soil.

What is ammonification?

500

This part of the water cycle describes how water flows over the land surface into bodies of water.

What is runoff?

500

Write the equation for photosynthesis.

What is CO+ H2O ---> Glucose + O2?

500

This natural event can also fix nitrogen besides bacteria.

What is lightning?