Answer:
Crude oil or also called "liquid fossil fuel"
Explanation:
Crude oil is most common is most fuel products. And in the commercial Pennzoil, the guy mentions crude oil, which can wear down engines.
Answer:
A
Explanation:
Increase enzyme concentration so more enzymes can react with carbon dioxide to form bicarbonate. D would make the reaction slower, C does not relate to the question and B is the product so would not help increase the rate of the reaction, only A
It splits down the middle
Answer:
Explanation:
...then the bird beak changes because the bird beaks are the most vital physical feature that allows birds to catch and devous its prey.
<span>in the skin the old cells flake off, new cells are replacing them very frequently.
Each time a cell is replaced the cell cycle starts all over again.</span>