Q: The major cause of outdoor air pollution is the burning of? Choices: - trees - trash - charcoal briquettes - fossil fuels A:
fossil fuels

Q: What drives puberty in male humans? Choices: - bloodstream - estrogen - methane - testosterone A:
testosterone

Q: Q: What is the process that ventilates lungs called? Choices: - photosynthesis - reproduction - perspiration - breathing A:
A: breathing

Question: Q: What is the term for something left behind by once-living organisms? Choices: - decay - waste matter - deposits - fossils A:
Answer: fossils

*Question*
Q: What does hypoxic mean? Choices: - standard oxygen level - Oxygen rate - higher oxygen - low oxygen A:
**Answer**
low oxygen

Q: What kind of enzyme is phosphofructokinase? Choices: - covalent - intracellular - orthosteric - allosteric A:
allosteric