Q: Animals produce most of what chemicals, which are needed to synthesize the fatty acids they need? Choices: - carbohydrates - solvents - hormones - enzymes A:
enzymes

Q: What bond is a force of attraction between ions and atoms? Choices: - carbon bond - Ionic bond - radiation bond - chemical bond A:
chemical bond

Q: Q: What does the stomach produce to help digest food? Choices: - acetic acid - lactic acid - amino acid - hydrochloric acid A:
A: hydrochloric acid

Question: Q: What advantage equals the distance of effort divided by the distance the object moves and is also equal to the output force divided by the input force? Choices: - potential - atomic - constant - mechanical A:
Answer: mechanical

*Question*
Q: When did we learn there was a hole in the ozone layer? Choices: - 1950s - 1970s - 1990's - 1980s A:
**Answer**
1980s

(Q).
Q: When magma cools slowly, what texture does it have? Choices: - large squares - large gases - small circles - large crystals A:
(A).
large crystals