The plants use the sun as their energy, using photosynthesis.
The insect and animals get their energy from the food they eat.
And bacteria get their energy by decomposing dead organisms.
You might have to do the research on what each animal eats if you need specific answers.
I'm sorry this isn't much, but hope this helps you out! :)
Semi-conservative DNA replication means that one stand is new DNA and the other contains a newly synthesized strand.
5 is C -- mutation.
I can't read all of 6-- sorry!
