If breathing is regulated to keep blood acidity balanced, then what does breathing help balance acidity levels? Answer choices: - blood - muscles - water - air - CO 2 - oxygen - Gases - protein
blood

If if a planet is too close to its star it cannot sustain life, then what happens if a planet is too close to its star? Answer choices: - cloudy and rainy weather - Gases turn solid - It cannot sustain life - uncontrolled - movement of tectonic plates - water becomes poison - there are too many aliens - Plant growth is reduced
It cannot sustain life

Q: If producing daughter cells of equal size often causes growth, then producing daughter cells of equal size often causes what? Answer choices: - pregnancy - eggs - growth - migrate - gene flow - disease - cycles - sperm
A: growth

Question: If fossils are formed when remains of living things are covered over time, then fossils are formed when remains of living things are what? Answer choices: - buried in mud - break off - covered over time - Physical weathering - By coral exoskeletons - It remains dormant - saved in a box - kept in the dark
Answer: covered over time

*Question*
If electron transport requires oxygen, then what does electron transport require? Answer choices: - Energy. - Energy - glucose - currents - kinetic - heat - oxygen - food
**Answer**
oxygen

(Q).
If molds can decompose wood, then what can decompose wood? Answer choices: - sugar - pine - bushes - ferns - bamboo - trees - Molds - Oak
(A).
Molds