Which arrow represents a process that requires energy to be added to the reactants to make products? A. A, B.B C D D

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

Anton created a chart listing different types of materials. which best complete the chart?

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.