First of all, most of the cell is water, and if water could just flow freely then the cells could become deformed or lose too much water or anything similar. Free passage of water could also ensure free passage of other things that might be there so the Aquaporins are needed to allow some water to pass, without any other elements. Water passes through in a single file, meaning it doesn't just pour all out.
Habitat I needed more thing for it to let me answer
The answer is true
becouse variegated leaves have areas with no epidermis
i hope it help...... have a good one
The answer is 'carbon dating'. The technique depends on a form of radioactive carbon which is formed by the interaction between cosmic rays and atmospheric carbon. This radioactive carbon, as a constituent of carbon dioxide, is taken up by plants through photosynthesis. This radioactive carbon can then move up the food chain. Once an animal dies, <span>it stops exchanging carbon with its environment, and the amount of this radioactive carbon begins to decrease through decay according to a specific half life. So by measuring the amount of radioactive carbon in animal remains, scientists can estimate the age when the animal died. The half life of radioactive carbon is approximately</span><span> 5,730 years, so the oldest dates that can be reliably measured by this process are around 50,000 years ago.</span>
B. I think thats right :/