Q: What type of rain dissolves limestone and marble? Choices: - carbon - natural - sulfur - acid A:
acid

Q: Energy from sunlight is absorbed by what pigment in the thylakoid membrane of chloroplasts? Choices: - tannin - keratin - melatonin - chlorophyll A:
chlorophyll

Q: Q: What forms when the spores from two parents fuse during sexual reproduction? Choices: - xerophyte - spirogyra - monospore - zygospore A:
A: zygospore

Question: Q: What often form symbiotic associations with much larger organisms? Choices: - protists - eukaryotes - viruses - prokaryotes A:
Answer: prokaryotes

*Question*
Q: Scientists think the solar system formed from a big cloud of gas and dust called what? Choices: - comet - supernova - Oort cloud - nebula A:
**Answer**
nebula

(Q).
Q: In a wheel and axle, when force is applied either to the wheel or axle, what aspect of the force does not change? Choices: - speed - pressure - shift - direction A:
(A).
direction