One reason is for safety! in case you get stranded in a body of water you can keep yourself afloat
Answer:
Fertilization Follows. During the spring of the female cone's second year, the male and female gametes are ready. The pollen grows a pollen tube, which enters a little hole in the ovule's skin near its basal end, called the micropyle. The tube enters the ovule, and the sperm goes down the tube and into the ovule.
Answer:
that takes place inside a plant, producing food for the plant to survive
Our muscles are attached to our skeleton to help us move. If we had no skeleton then our muscles would hang limply, making it harder for us to move.
Peer-review, somebody else read and grades the work to give feedback on the scientists work.