Answer the question below:   Which planet does the sun have the least gravity effect on Mars or Mercury?    Assuming that:  The Moon has a greater effect on the tides because, although it is much smaller than the Sun, it is much closer.
Mars

Answer the question below:   Since Kim has more melanin than Jennifer, when they lay out in the sun Jennifer's skin is darker or lighter than Kim's?    Assuming that:  However, the melanocytes of people with darker skin produce more melanin.
lighter

Answer the question below:   If Mona shines a light through both wool and cotton and determines that cotton is less dense then wool, which material will the light move faster through wool or cotton?    Assuming that:  The more dense the medium, the slower the light moves.
cotton

Answer the question below:   If you keep something whole before putting it into water it will dissolve slower or faster?    Assuming that:  Therefore, increasing the surface area of solid reactants increases the reaction rate.
slower