water cycle
what organisms break down waste
decomposers
what’s atmosphere mean?
envelope of gases surrounding the earth or another planet.
where do plants get their nitrogen from
soil
how do animals get phosphorus
by eating plants and animals.
oil, natural gas and coal
why is there more Co2 today than in the past?
Burning fossil fuels.
what organisms can do denitrification?
bacteria
what washes away phosphorus in soil into water
pollution
name the types of water
the types of water are: saltwater, freshwater, glaciers, groundwater, water vapor.
what do animals use in the process of respiration?
oxygen.
what’s nitrogen used for
to make proteins, dna and chlorophyll.
how do phosphates end up in the ocean?
runoff
what’s the only form of nitrogen plants can take in?
nitrates
what form is carbon when it leaves pl
glucose
how is nitrogen removed from the atmosphere
Lighting and fixing bacteria
what is different about phosphorus cycle
doesn’t involve the atmosphere
what’s runoff
water that flows over the ground surface rather than soaking into the ground.
name the major greenhouse gases
water vapor, carbon dioxide, and methane.
what kind of plants have nitrogen fixing bacteria that live on their roots
legumes
why is it important to humans
needed to form bones and teeth. P in ATP