Which of the following statements is/are example(s) of something that could be explained using chemistry? Select all that applying
The ripening of an apple ripens other apples.
Venus is the only planet that spins in the opposite direction to Earth.
A 200-pound person would only weigh 76 pounds on Mars,
A piece of cut potato turns brown when left out on the cutting board.

the first and fourth

Explanation:

Ripening and rotting can be explained as chemical changes in chemistry. The other two answers are physics-related. Venus rotates in an opposite direction because it has like forces with mercury, so it repels it, causing it to turn away. This is electromagnetic force, something definitely not directly related to chemistry. The 200-pound person problem has to do with weight, mass, and gravitational force, which is mainly in physics.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.