Answer:D) all of the above
Explanation:these are all correct because they all affect our environment
Answer:It went into the air through evaporation.
Explanation:
Answer:
That there used to be an abundance of plants and animals that lived there. Does this help?
Explanation:
Coal forms from dead things from the past being subjected to high pressure.
Answer:
Evaporation is a regular process that occurs when the liquid form changes into the gaseous form; while causing a increase in the pressure or temperature. Boiling is an unnatural process where the liquid gets heated up and vaporized due to continuous heating of the liquid.
Explanation:
hope this helps
Answer:
B. Use the polymerase chain reaction (PCR) to make multiple copies of the DNA.
Explanation:
The scientist is to analyze a small sample of DNA, the most useful step to start this would be first the use of polymerase chain reaction to make various copies of that DNA sample. PCR is essential and quick process that gives a lot of copies within few hours. It uses the sample or target DNA, according to which the primers are designed. Taq polymerase and DNA polymerase are also used in the process, it consist of various cycles in which copies are made. There are three basic steps 'Denaturation', 'annealing', and 'extension'.
