Biology Questions!!! need help fast =]?

[LiveLife2theFullest]

I would really appreciate it... 10 points for best answer!!!

1. Why do plants and animals that live in the water have a simpler reproductive process than the plants and animals that live on land?

2. Why are many kinds of fish very easily produced in fish hatcheries?

3. Why are egg cells in birds relatively few in number and large in size?

4. Describe the migrations made by salmon and eels for purposes of reproduction.

5. Describe the life history and reproduction of the common toad.