water cycle
The continues movemen of water on earth
What is the water cycle
Plants use CO2 in the process of ______ to make oxygen and ______
What is photosynthesis and sugar
Phosphorus moves between the soil and _______ which are eaten by animals
What are plants
the atmosphere is ______ percent nitrogen
what is 78 percent
CO2 is released into the atmosphere by ________
What is burning fossil fuels
liquid water changing into a gas
What is evaporation
Animals use oxygen in the process of _______ to breathe
What is respiration
Phosphorus in soils can be washed away into water _______
What is overgrowth
bacteria in the soil can break down ammonia
What is denitrification
Too much CO2 in the atmosphere
What is greenhouse affect
water turning from a gas back into a liquid
what is condensation
_______ is the main regulator of CO2
What is the ocean
Phosphorus in water leads to ______
What are basins
Higher organisms use nitrogen to make _______
What are proteins
Types of fossil fuels
What are coils, oils, an natural gasses
Precipitation gathering in lakes rivers and oceans
What is collection
Carbon deposits are made of _________
What is decayed organisms
Phosphorus is mostly found In ______and ______
What are rocks and minerals
Nitrogen returns to soil by ______
what are animals
How phosphorus enters the water
What is pollution
The physical substances In the water cycle
What are rain, snow, sleet, and hail
natural source of CO2
What are volcanos
Phosphorus is a essential nuterine t to make up important chemicals such as _______
What is DNA
Products rich in nitrogen
What are ammonia
Humans inhale oxygen and exhale ______
What is CO2