Phosphorus is never encountered in the natural world
Question 2
2.
Phosphorus is only encountered in the natural world as...
Question 3
3.
A) Where are phosphates orginally from?
B) How do they get into bodies of water?
Question 5
5.
Phosphate compounds can be __________. They can then be transferred to __________
Question 6
6.
When animals excrete waste or die, phosphates can be taken up by...
Question 8
8.
When phosphorus containing compounds from the bodies or __________ sink to the floor of the ocean __________. Over long periods of time phosphorus containing rock may move from __________ and then the cycle repeats.
Question 9
9.
Phosphorus can be a limiting factor for ecosystems. A limiting factor...
Question 10
10.
Fertilizer carried in _______ may cause excessive growth of _______ or microbes that were previously _______ by the phosphorus.
Word bank:
abundant
limited
factor
runoff
algae
fish
Question 11
11.
Eutrophication is harmful when all of the _______ algae die and are _______ by microbes, large amounts of _______ are used up as their bodies are _______ down.