SCIENCE

5. The breaking down of rocks on the earth's surface is _____
6. If fish are caught faster than they can breed, what will happen to the population?
8. Which term refers to the number of protons in an atom and helps to place elements on the Periodic Table?
10. The study of interactions between organisms and their environment is called_____
11. Which subatomic particle has a positive charge?
12. Which body system pumps and transports the blood to all parts of the body as well as supply oxygen and remove waste products from body tissues?
13. Which subatomic particle is NOT found in the nucleus of an atom?
14. On the Periodic Table, elements that are in the same vertical column are considered to be in the same_____
15. Which of the following nutrients is used to build and repair cells?

1. Which organelle contains nearly all of a eukaryotic cell's DNA?
2. In addition to food, what else does a mitochondrion need to release energy?
3. What is the hormone responsible for causing sudden emotional changes and sexual feelings that occur in males during puberty?
4. Which area of Earth science includes the study of stars?
7. This structure, found in cells, assembles proteins.
9. A species in danger of becoming extinct in the near future is referred to as a(an)_____ species.
15. On the Periodic Table, all elements that are in the same horizontal rows are considered to be in the same ______