Q: Over time, what changes solid rock into pieces? Choices: - metamorphosis - creep - leaching - weathering A:
weathering

Q: What is the area around the nucleus of an atom where electrons are likely to be, called? Choices: - electron wave - electron membrane - electron pocket - electron cloud A:
electron cloud

Q: Q: What part of the muscle fibers cause shortening and contraction? Choices: - fasciae - pores - collagen - myofibrils A:
A: myofibrils

Question: Q: What provides a protective covering for the body and helps maintain homeostasis? Choices: - unadorned system - endorcrine system - lysogenic system - integumentary system A:
Answer: integumentary system

*Question*
Q: What elements do water and hydrogen peroxide consist of? Choices: - carbon and oxygen - calcium and oxygen - hydrogen and helium - hydrogen and oxygen A:
**Answer**
hydrogen and oxygen

Q: Besides the concentration of dissolve oxygen and nutrients in the water, what other factor limits aquatic organisms? Choices: - rainfall - temperature - lake size - availability of sunlight A:
availability of sunlight