First slide

Populations

Question

If in a pond there were 20 lotus plants last year and through reproduction 8 new plants are added, taking the current population to 28, calculate the birth rate

Difficult

A

0.1/year
B

0.4/year
C

0.8/year
D

0.04/year

Solution

Initial population = 20;
Current population = 28;
Number of lotus plants added = 28-20 = 8;
the birth rate = 8/20 = 0.4/year

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