SCIENCE

4. The breaking down of rocks on the earth's surface is ____
5. Which term refers to the number of protons in an atom and helps to place elements on the Periodic Table?
6. 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?
10. This is the structure in plant cells that captures the sun's energy and changes it into chemical energy.
12. This structure, found in cells, assembles proteins.
13. The study of interactions between organisms and their environment is called_____
14. On the Periodic Table, all elements that are in the same horizontal rows are considered to be in the same ____

1. What is the hormone responsible for causing sudden emotional changes and sexual feelings that occur in males during puberty?
2. A species in danger of becoming extinct in the near future is referred to as a(an)_________species.
3. The outer layers of plants, fungi and some protist cells which support and protect the cell are called the _____
4. What day is it when the sun is at its lowest elevation in the sky all year and we experience the shortest day of the year?
7. Which area of Earth science includes the study of stars?
8. Which of the following nutrients is used to build and repair cells?
9. On the Periodic Table, elements that are in the same vertical column are considered to be in the same_____
11. Which subatomic particle has a positive charge?