A population growing exponentially .
a. is stab...

Question

A population growing exponentially                   .
a. is stable in size;
b. adds a fixed number of individuals every generation;
c. adds a larger number of individuals in each successive generation;
d. will likely expand forever;
e. will not crash

Accepted Answer

Hi everyone. Here's our next question in exponential population growth. And then we have choices of A birth and mortality rates are equal. Birth rate exceeds mortality rate, mortality rate exceeds birth rate and both birth and mortality rates are low. So let's think about what exponential population growth means. That means if we look at a population over time, we see this J shaped curve where you have population rapidly shooting up. Well that can only happen when your birth rate far exceeds the death rate. Because you again, exponential growth. You see this rapid rise in population. So let's look through our answers here. Choice. A birth and mortality rates are equal. Well that would give you zero population growth, definitely not our answer. Choice B says birth rate exceeds mortality rate and yes you need that to happen. Birth rate must exceed mortality rate to have that rapid population growth. Choice C. Says mortality rate exceeds birth rate. Well if your death rate exceeds your birth rate, that's a negative population growth. So see definitely not the answer choice D. Says both birth and mortality rates are low. Again that's not going to give you exponential growth of your population. You need much higher birth rate. So Choice D. Not correct our answer and exponential population growth growth choice B. Birth rate exceeds mortality rate. See you in the next video

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