Q: What is the time it takes for radioactive substance to decay? Choices: - decay rate - full-life - deterioration rate - half-life A:
half-life

Q: What occurs where the water motion slows? Choices: - diffusion - vapor - erosion - deposition A:
deposition

Q: Q: The characteristic sound of a motorcycle buzzing by is an example of which effect? Choices: - warp effect - coreolis effect - polar effect - doppler effect A:
A: doppler effect

Question: Q: What is the fertilization step in the sexual reproduction of plants? Choices: - hibernation - Fornications - evolution - pollination A:
Answer: pollination

*Question*
Q: What do we call the cartilaginous structure that surrounds the notochrod? Choices: - osteocytes - clavicle - membrane - arcualia A:
**Answer**
arcualia

Q: Q: What are formed when primary pollutants interact with sunlight, air, or each other? Choices: - cross pollutants - typical pollutants - secondary contaminants - secondary pollutants A:
A: secondary pollutants