Blood pH may become unbalanced if the rate of breathing is too fast or too slow, and breathing is regulated to keep as normal as possible arterial blood pH and PO2. Given these facts, what does breathing help balance acidity levels among the following options: - blood - muscles - water - air - CO 2 - oxygen - Gases - protein
blood

If a planet becomes too hot then that planet cannot sustain life, and the inner planet is so close to its star that it's too hot. Given these facts, what happens if a planet is too close to its star among the following options: - 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: Cell division often causes growth, and cell division produces daughter cells of equal size. Given these facts, producing daughter cells of equal size often causes what among the following options: - pregnancy - eggs - growth - migrate - gene flow - disease - cycles - sperm
A: growth

Question: Fossils are formed when layers of sediment cover the remains of organisms over time, and fossil fuels are formed from the remains of once living organisms that depended on light. Given these facts, fossils are formed when remains of living things are what among the following options: - 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*
Electron transport is the final stage of aerobic respiration, and aerobic respiration requires Oxygen. Given these facts, what does electron transport require among the following options: - Energy. - Energy - glucose - currents - kinetic - heat - oxygen - food
**Answer**
oxygen

(Q).
Fungi are the only organisms that can decompose wood, and fungi include yeasts, molds, and fleshy fungi. Given these facts, what can decompose wood among the following options: - sugar - pine - bushes - ferns - bamboo - trees - Molds - Oak
(A).
Molds