Q: What is another name for molecular compounds? Choices: - phenotype compounds - oxidized compounds - synthetic compounds - covalent compounds A:
covalent compounds

Q: What is the the basic si unit for mass? Choices: - pound - volume - density - kilogram (kg) A:
kilogram (kg)

Q: Q: What can demonstrate the decrease in energy, biomass or numbers within an ecosystem? Choices: - biomes - spontaneous mutation - food chains - ecological pyramids A:
A: ecological pyramids

Question: Q: All living things need air and this to survive? Choices: - stimuli - habitat - ecosystem - water A:
Answer: water

*Question*
Q: Bacteria break down the remains of digested food through a processed called what? Choices: - regulation - oxidation - synthesis - fermentation A:
**Answer**
fermentation

(Q).
Q: What energy, produced by vibrations, cannot travel through empty space? Choices: - light - heat - plasma - sound A:
(A).
sound