26. Classify each of the following as a chemical reaction, a nuclear reaction, or neither:
a. Thorium emits a beta particle.
b. Two atoms share electrons to form a bond.
c. A sample of pure sulfur emits heat energy as it
slowly cools
d. a piece of iron rusts.

What does the process of natural selection involve

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

2. how is heavy water different from normal water