Q: What is indicated by the ratio of the output force to the input force in a machine? Choices: - momentum - magnetic force - man hours - mechanical advantage A:
mechanical advantage

(Question)
Q: What is the most prevalent gas in the atmosphere, but not the most vital for life? Choices: - carbon dioxide - oxygen - argon - nitrogen A:
(Answer)
nitrogen

Ques: Q: What type of tissues are major barriers to the entry of pathogens into the body? Choices: - skin - vascular - nasal - mucosal A:
Ans: mucosal

(Q).
Q: What property of carbon and other elements can be used to date fossils and rocks, among other things? Choices: - mass - full-life - magnetic force - half-life A:
(A).
half-life

Ques:Q: Phosphate groups are found within phospholipids and what else? Choices: - amino acids - carotenoids - hydrocarbon chains - nucleotides A:

Ans:nucleotides

Ques:Q: What is the term for when the phenotype of offspring is partly determined by the phenotype of its mother, irrespective of genotype? Choices: - congenital effect - uterine effect - oceanic effect - maternal effect A:

Ans:
maternal effect