Answer:
D. they do not have stems, roots and leaves
Lust and corrol or barnicles
That depends on what you mean by ripples at the beginning of time. If you are referring to inflation of the universe caused by the Big Bang, and the subsequent "ripples", then those ripples are the leftover, background radiation from the event. If you are referring to ripples in space-time, then it still could have multiple meanings.
C. Can have drastic effects to life on Earth.
Because the rise of temperatures can be lethal towards not only human life, but plant and animal life as well.