Random question?

Where is most of the mass of the atom located?

Random question?

A student was taking notes while the teacher was discussing cells. Which of these is a statement that the teacher most likely made?

Random question?

Steven went to a farm and picked a bright red tomato from a broken branch on the plant. The tomato had a rotten spot with a worm inside of it. Instead of eating the tomato, Steven decided to plant the seeds and grow new tomato plants. Which characteristic of the tomato plant is inherited and could change over several generations?

Random question?
Which change increases the rate of a chemical reaction?