What are x-rays used for?

a. cook food
b. form images of internal organs
c. get tv signals

Put the following steps of the convection process in the correct order. 1. gravity pulls cooler matter downward. 2. the matter expands and decreases in density. 3. an up-and-down flow of matter produces a convection current. 4. matter is heated. 5. warmed matter is forced upward. question 2 options: a) 4, 2, 5, 1, 3 b) 2, 4, 3, 1, 5 c) 3, 2, 5, 4, 1 d) 1, 4, 2, 5, 3

There are only about 250,000 known fossil species. true or false

Which diagram best represents the chromosomes that would be found in a two new skin cells produced as a result of this process?