Q: Which system in the body exchanges gases with the outside air? Choices: - immune - digestive - vascular - respiratory A:
respiratory

Q: While most mammals give birth to live young, monotremes can do what? Choices: - reproduce asexually - adopt offspring - steal eggs - lay eggs A:
lay eggs

Q: Q: What is the functional unit of compact bone? Choices: - spongin - collagen - scleroprotein - osteon A:
A: osteon

Question: Q: A heterogeneous mixture of particles of one substance distributed throughout a second substance in a different phase is known as what? Choices: - disruption - solution - fluid - suspension A:
Answer: suspension

*Question*
Q: The passing of traits from parents to offspring is done through what? Choices: - sperm - egg - blood - dna A:
**Answer**
dna

Q: Q: All alkanes are composed of carbon and hydrogen atoms, and have similar bonds, structures, and formulas; noncyclic alkanes all have a formula of cnh2n+2. the number of carbon atoms present in an alkane has what? Choices: - done limit - crippling limit - such limit - no limit A:
A: no limit