Q: What are unsaturated hydrocarbons with at least one triple bond between carbon atoms? Choices: - amines - lipids - ketones - alkynes A:
alkynes

Q: What are a class of tetrapod vertebrates that produce amniotic eggs called? Choices: - mammals - amphibians - insects - reptiles A:
reptiles

Q: Q: Scrubbers and catalytic converters are examples of technologies that change what into harmless compounds? Choices: - contaminants - toxins - mutations - pollutants A:
A: pollutants

Question: Q: What is the type of landscape that occurs at higher latitudes than deserts, has short grasses and low bushes, and are dry because they are in continental interiors? Choices: - tundra - plains - plateau - steppe A:
Answer: steppe

*Question*
Q: Sounds or pictures can be encoded in pulses of what, which are then sent through an optical fiber? Choices: - kinetic energy - microwaves - quasars - laser light A:
**Answer**
laser light

Q: What type of organisms do not need blood? Choices: - cold-blooded - vertebrate - marine - single-celled A:
single-celled