Question

1.The estimated doubling time for the black sea urchin population is approximately 1.5 years. What is the annual growth rate of the urchin?

help please?

Answer 1

growth rate= (final-initial)/initial *100

so lets consider this urching

N=Original*2^(t/1.5) in one year
N=Original*2^.666=1.59 original

growth rate=(1.59-1)/1*100= 59 percent per year