Make up 3 more examples that show the meaning of "rate of reproduction", and 3 examples that show the meaning of "rate of attrition".

If no animals arrive from the outside of the region being studied, and no animals leave to

the outside, then the population at the beginning of one year (say, 1996) is related to the

population at the beginning of the next year (say, 1997), but this equation.

P 1997 = P 1996 + P1996 (R - A)