Life on Earth Flashcards
1
Q
What does the arrow represent in food chains?
A
The direction of energy flow.
2
Q
What % of energy is lost at each stage of the food chain?
A
90%
3
Q
What % is passed on at each level of the food chain?
A
10%
4
Q
What converts ammonium compounds in to nitrite then nitrate?
A
Nitrifying bacteria
5
Q
What releases nitrate in the soil into nitrogen in the air?
A
Denitrifying Bacteria
6
Q
What breaks down plant and animal waste?
A
Decomposers
Bacteria and fungi
7
Q
What converts nitrogen in the air to nitrate?
A
Nitrogen-fixing bacteria
Found in root nodules
