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How can excess phosphorus in a lake kill underwater aquatic plants?
Algal bloom blocks sunlight needed by photosynthesizing aquatic plants.
How can excess phosphorus in a lake harm fish?
Algal bloom and excess algae decomposition and use up oxygen in water
How does clearing forests disrupt phosphorus cycle?
clearing forests expose soil, rain can wash away phosphorus from soil
The largest phosphorus reservoir is the _________ (earth system).
geosphere
Phosphorus recycles at the highest rate in which earth system?
biosphere
Phosphorus does not cycle through which earth system?
atmosphere
What is the compound that consists of phosphorus and oxygen elements commonly found in the earth systems?
phosphates
The gases in the atmosphere that absorb and re-radiate thermal energy from the Sun are called ______________.
greenhouse gases
Earth systems interact by exchanging _____________ and ____________.
matter, energy
Plants absorb phosphorus from either ________ or _________.
soil, water
How do animals return phosphates to the soil?
by animal waste or decomposition when they are dead.
Which type of rocks are formed by deposition, compaction, and cementation?
sedimentary rocks
Which type of rocks are formed by cooling and crystallization of magma?
igneous rocks
______ are formed by weathering and erosion of rocks.
Sediments
