When a volume of water is cooled, the molecules move less vigorously, so same number of molecules takes up less space and the water is denser. If Mona fills up a cup with water and places that water into the freezer, what happens to the density of the water as it cools down increases or decreases?
increases

The more similar the DNA molecules of different species are, the closer the relationship is likely to be. When we look at monkeys and humans they have a lot of matching DNA meaning they are similar or very different?
similar

Water flowing over a steeper slope moves faster and causes more erosion. Mona is a scientist studying erosion at a university. She is observing a river. If she starts taking erosion measurements at the mouth of the river and moves up to the head of the river, what will she find happens as the slope gets less steep erosion decreases or erosion increases?
erosion decreases

An object has greater momentum if it has greater mass, greater velocity, or both. A larger boulder will roll down a hill faster or slower than a smaller one?
faster