Natural Selection & Evolution Post Lesson Practice.

Copy and complete the following sentences.

1. Many offspring do not survive because they are eaten by ___________

or die of exposure, starvation or ______________. This is why

organisms produce more / less offspring than can possibly survive. (3)

2. Organisms produced by ___________ reproduction show

_____________ variation. (2)

3. Organisms which are better adapted to their _____________

survive and so pass on their ___________ to their offspring. Those not

adapted will __________ to pass on their genes. This process, where

only the fittest survive, is called natural ___________ and the

appearance of new species by this method is called ____________. (5)

Total = 10