Answer:
when carbon dioxide level goes up.temp. goes down.and vice versa
Reproductive isolation must happen
Answer:
Human glucocebrosidase is used as a therapeutic drug which is used to treat Gaucher's disease.
The farming of this substances in crops is very helpful for the population. The genetic engineering to insert genes in plants would result in GMOs.
It is more beneficial to use plants for this process as compared to that of animals because it is easily available and easily extracted.
It is more economical and easily accessible by people. It would not harm animals by incorporating the gene in them in laboratory conditions.
Yes, they ate the only mammals which could fly because flying squirrels, possums or etc. could only glide for a short distance and time, unlike bats. There are no reptiles who could fly, but there are reptiles who could glide which I think is completely different. But they said that Pterosaur existed which they believed it is a flying reptile dinosaur. Just look it up. :)
All living things have DNA within their cells
So Yes
Hope that helped