We have already seen that while energy does not cycle through an ecosystem, chemicals do. Among the many cycles of matter, the water, nitrogen, phosphorus, and carbon are the most important ones! These cycles are composed of atoms and molecules which are constantly moving between living and nonliving systems. Carbon is a basic building block of all life on Earth because it has the ability to form long chains to which other atoms can attach. …showed first 75 words of 415 total…

…showed last 75 words of 415 total…The plant takes me from the soil 4.<Tab/>I evaporate from their leaves 5.<Tab/>I move into the air 6.<Tab/>I vapor cools 7.<Tab/>I become liquid 8.<Tab/>Gather with my other friends 9.<Tab/>We form clouds. 10.<Tab/>Then I go back to my journey through precipitation.