Trees take carbon dioxide out of the air and convert it to oxygen, so the government funds a tree-planting initiative by offering $300 to any citizen who plants a tree.

Aprocedure done under controlled conditions to test a hypothesis is an inquiry.

The most effective way to provide children with safety messages is to

Which chemical reaction shows photosynthesis? a. water + carbon dioxide + sunlight → oxygen + glucose b. carbon + oxygen → carbon dioxide c. hydrogen + oxygen → water d. nitrogen + hydrogen → ammonia