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?
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
To find the annual growth rate of the urchin population, you can use the rule of 70, which estimates the doubling time based on the growth rate:
Doubling Time = 70 / Growth Rate
In this case, the estimated doubling time is 1.5 years. Let's substitute this value into the formula:
1.5 = 70 / Growth Rate
Now, we can rearrange the equation to solve for the growth rate:
Growth Rate = 70 / 1.5
Growth Rate ≈ 46.67
Therefore, the annual growth rate of the black sea urchin population is approximately 46.67%.