Q: What do you call a device that produces a very focused beam of visible light of just one wavelength and color? Choices: - optical diffuser - fusion relay - light meter - laser A:
laser

Q: What do corals secrete that builds up to become a coral reef? Choices: - membrane - mucous - scales - exoskeleton A:
exoskeleton

Q: Q: Heterotrophic organisms use organic compounds, usually from other organisms, as a source of what basic element of life? Choices: - oxygen - monoxide - hydrogen - carbon A:
A: carbon

Question: Q: What is the term used to describe the liquid that moves through the vessels and includes plasma and the cells and sell fragments called platelets? Choices: - water - pus - bacteria - blood A:
Answer: blood

*Question*
Q: What 3 types of friction occur between solid surfaces? Choices: - static , arching , rolling - static,desending,sliding - static , ascending , rolling - static, sliding, rolling A:
**Answer**
static, sliding, rolling

(Question)
Q: What is the middle layer that hair pass through before exiting at the surface of the skin? Choices: - epithelial tissue - cuticle - dermis - epidermis A:
(Answer)
epidermis