What is a reproductive strategy?
a. the number of alleles an organism passes on
b. the dna that is passed onto an offspring
c. the adaptations that an offspring passes on
d. the method an organism uses to produce offspring

Reproductive strategy is the method an organism uses to produce an offspring.

Explanation:

The mode of reproduction and the number of reproductive phases in an organism’s lifetime all are reproductive strategies. Organisms can reproduce sexually as well as asexually. In some organisms reproduction occurs just once in their lifetime. Reproduction marks the end of their lifetime.  

Thus the number of offspring they produce would be also large. Such kind of reproduction is   called semelparous reproduction. But in iteroparous reproduction an organism has several reproductive phases in its lifetime .

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

layer 3 is younger than layer 6.