Ques: Q: Millions of years ago, plants used energy from the sun to form what? Choices: - fossil fuels - evolution - greenhouse gases - carbon compounds A:
Ans: carbon compounds

Ques: Q: During strenuous exercise our muscles perform what kind of fermentation? Choices: - nitric acid - residual acid - excessive acid - lactic acid A:
Ans: lactic acid

Ques: Q: The sweat glands of the armpit are classified as these? Choices: - mucus glands - pineal glands - adrenal glands - apocrine glands A:
Ans: apocrine glands

Ques: Q: What type of bonds only form in metals? Choices: - optical bonds - friction bonds - liquid bonds - metallic bonds A:
Ans:
metallic bonds