Hydrogen fuel cell powered cars emit a 0 emission.
Rabbits,elk, and so forth rabbits have grass and roots
Mosses,ferns and thallophytes
Jet streams are fast moving air currents much like how a river is a fast moving water current so the answer is jet streams.
The answer is A, Viruses
Viruses cannot reproduce on their own , so they have to inject their DNA or RNA into the nucleuus of a cell. By doing this, the virus will take over that cells and within times, that cells will pop up and producing more viruses.
This reproduced virus will repeat the same process until our immune systems stop them
