Plz i'm desperate! why are all people on earth members of the same biological species?
a. all people have the same genetic makeup.
b. all people originated from the continent of africa.
c. all people have adaptions that allow them to live anywhere on earth.
d. all people can mate with one another and have children.

D.) All people can mate with one another and have children

Explanation:

a displacement distance is size of displ

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.