biology ecology and feeding and cycles Flashcards
1
Q
what is an autograph ?
A
can produce its own food.
2
Q
what is an heterotrophs?
A
cant makes its own food eg has to eat others
3
Q
what do the arrows on a food chain show
A
the transfer on energy
4
Q
what is a food web ?
A
a system of interlocking dependent food chains
5
Q
if rabbits eat dandelions. and fox’s eat rabbits. what will a decrease of dandelions do to the fox population ?
A
the fox population will decrease.
6
Q
what percent of energy is used for growth
A
around 10%
7
Q
explain the nitrogen cycle.
A
nitrogen —> ammonium (NH4) (though nitrogen fixing bacteria) —–> nitrify bacteria change it to nitrites —> then the next change is nitrite —> nitrates by nitrify bacteria last step denitrifify bacteria in soil changes it in nitrogen gas
8
Q
A
9
Q
A
