What are some examples of how we interfere with ecosystems. for each example, explain how it happens, why we do it, and then mention short and long term effects of it

Explanation:

if  you are using USA test prep the answer is d.

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this