The answer is "because water is produced as a by-product"...the word dehydration should also be a major clue because that means water loss.
Answer: By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other. Often we can work out how and where they lived, and use this information to find out about ancient environments. Fossils can tell us a lot about the past.
Answer: Yes.
Explanation: Microtubules are part of the cytoskeleton, a structural network within the cell's cytoplasm.
Dissolved O2 conc. in flask with algae will be higher since photosynthesis produces O2.
Answer:b) The air at high altitudes are less dense, so its harder to breathe.
Explanation:
AS altitude increases, the air pressure drops. This reduces the amount of gas molecules in the air so the air becomes less dense compared to air closer to sea level.
