Final answer:
In logistic growth, dn/dt decreases as the population approaches the carrying capacity. However, without the growth rate constant, we cannot calculate dn/dt accurately in this situation.
Step-by-step explanation:
In logistic growth, the growth rate of a population slows down as it approaches the carrying capacity of the environment. To find dn/dt in this logistic growth situation, we need the logistic growth equation, which is dn/dt = r imes n imes (1 - (n/K)), where r is the growth rate constant, n is the population size, and K is the carrying capacity.
Using the given information, we know that the carrying capacity is 70 dandelions. We do not have the growth rate constant, so we cannot calculate dn/dt accurately. However, the logistic growth equation suggests that as the population size (n) approaches the carrying capacity (K), dn/dt will decrease, indicating a slower growth rate.