Decide which examples are most likely to increase
variation or decrease variation. Some examples
could do both.
Which of the following could possibly increase
genetic variation indirectly?
toxins
predator-prey relationships
competition
new habitat
disasters
increased food supply
DONE
1) Intro

coal is not sustainable because it will one day run out.

b.have there own function.

a bird that nests only in a particular tree species.

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.