Walking does not contribute to global warming.
Answer:
the one the already have clicked
The answer is b. I am not sure exactly how to explain this, but it fits in much better with that question. I hope this could help you!
Forests are only renewable as long as careful planning is done to determine how many trees to cut and to nake sure new trees are planted to replace them.
The polymerase chain reaction makes DNA fingerprinting more reliable because it allows scientists to quickly make many copies of DNA the answer is C