If two individuals from different species attempt to mate, but fertilization fails to occur, this is likely the result of. However, if such a mating produces a zygote that fails to form a viable embryo, this is likely the result of.
a. pre-zygotic factors; post-zygotic factors.
b. post-zygotic factors; pre-zygotic factors.
c. behavioral factors; pre-zygotic factors.
d. pre-zygotic factors; behavioral factors.
e. post-zygotic factors; lock-and-key factors.

Explanation:

Fertilization is the process of fusion of  male gamete (sperm) and female gamete (egg). Before fertilization, all the events are known as pre-fertilization events and those which occurs after fertilization are known as post-fertilization events.

There are various factors which help in fertilization. All species contain some receptors on the membrane of egg which play very important role in fertilization and prevent fertilization between inter-species.

The mating in which the formation of zygote is occurs but it is unable to form a viable embryo,  is due to the result of post-zygotic factors.

correct answer: false

while planning water activities, it is very important to consider the weather, because if we do not plan and are going for a surf, then it might be that the hurricane came and drown us or may carry us to long distance from where we can not come back. there are many reasons to take information about the weather when we are planning any water activities.

hence, the correct answer would be false.