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1. A population's growth rate is likely to be highest a. when numbers are near (or...

1.
A population's growth rate is likely to be highest
a. when numbers are near (or at) the carrying capacity.
B. when numbers are near half of the carrying capacity.
c. when numbers are at a minimum (near zero)
d. (none of the above - population growth rates do not change.)
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Answer #1

B option is correct. Population follows two types of growth model based on growth strategies: Exponential or J shaped growth model and logistic or S shaped or sigmoidal growth model. Exponential model is expressed as dN/dT= rN and logistic model is expressed as dN/dT= rN(K-N/K) where, N is initial population, r is biotic potential and K is carrying capacity. Carrying capacity of a given area refers to the amount of natural resources which can sustain the maximum number of population and maximum growth rate is present when N= K/2.

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