Mjoy got the answer incorrect! The answer you are looking for is C. soil, why is because there are many other planets that have ice caps. Earth is the only planet that utilizes soil which makes it unique.
The correct answer is A) The space shuttle program has come to an end.
The author thinks that the time may now be right to focus on ocean research because the space shuttle program has come to an end.
The main argument for the author to support ocean exploration is that he considered that the space shuttle program of NASA had already ended in 2011. Too much money -billions of dollars- had been invested in the space program, and now it was time to enter the unknown territories of the oceans.
The author is probably right. We do not much about oceans and what could be under the sea. That is a real mystery. We have explored enough about the space, according to our possibilities and limitations, but practically the ocean is unknown. So ocean exploration would be a real challenge.
<span>This happens by age three to four. Children develop sexual behavior often much earlier that conventional thinking indicates. It is up to the parents to teach Suzie when it is appropriate to engage in such behavior. In the past, children were taught that masturbation was wrong, but this may vary today.</span>