PLEASE ANSWER BOTH QUESTIONS IF POSSIBLE​

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.

Heat energy, carbon dioxide, and water are released through which process? a. photosynthesis b. depolymerization c. digestion d. cellular respiration

Chemical engineering who specializes in negotiating for large purchases and instructing customers in use of the products are