Which statement explains something that the fossil record indicates? Earth is 4.5 billion years old.
Mammals have always existed on Earth.
Mass extinctions have occurred several times on Earth.
The amount of water on Earth has decreased over time.

1. watermelon, papaya, oranges, bananas, and lemons are included in this food group. vitamin c 2. you need 6 or more servings of this food group each day vitamins d and a 3. found in fruit and keeps blood vessels healthy calcium 4. vitamins found in milk bread and grain 5. a mineral that strengthens bones fruit

What materials must dams have to produce electricity, and what must occur?

Matched chromosomes carrying information about the same characteristics in the organism are called