Ques:Q: What can be hard or even impossible to perform in a scientific sense? Choices: - hypothesises - idea - theorys - experiments A:

Ans:experiments
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Ques:Q: The ozone layer protects the earth from what? Choices: - pollution - light waves - radio waves - uv radiation A:

Ans:uv radiation
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Ques:Q: What is the acid that is released by the stomach that kills most pathogens that enter the stomach? Choices: - Nitric Acid - Hydrofluoric Acid - Sulfuric Acid - hydrochloric acid A:

Ans:hydrochloric acid
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Ques:Q: When a host attacks a parasitic bacteria, the bacteria release what to surround the cell wall? Choices: - bacteriophages - pathogens - protoplasma - layer of slime A:

Ans:
layer of slime
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