coral reefs Flashcards
1
Q
how much does coral cover
A
1% seabed
2
Q
what protect young fish?
A
reefs
3
Q
what does warming waters means for coral
A
coral bleaching
4
Q
what are ideal conditions temp for coral
A
30 degrees n/s of equator
5
Q
what is the largest reef?
A
great barrier, 1500km, covering 284,300kmsq
6
Q
how deep does water have to be for coral?
A
shallow, clear, >30m
7
Q
how much marine life does a coral reef have
A
25%
8
Q
FAUNA in a coral reef
A
parrot fish feed on polyps
clams settle on sea bed
eels live in coral
9
Q
what give coral food?
A
the symbiotic relationship between zooxanthallae and coral
10
Q
why are coral reefs important
A
diverse life lots of species of living things 1500 fish 6 turtle coral extracts are medicinal food coastal protection
11
Q
where do coral live
A
poor nutrient water so has to be efficient in recycling nutrients
12
Q
where does zooxanthallae live?
A
within tissue of a polyp
