Roads are sometimes salted to melt ice. What does this do to plants around the roadside and why?
If a shiwrecked crew drinks seawater, they will probably die. Why?
If a bowl of fresh strawberries is sprinkled with sugar, a few minutes later the berries are covered with juice. Why?
2007-12-13 14:32:33 · 2 answers · asked by dancinkitty0510 3 in Science & Mathematics ➔ Biology
1. The salt makes the environment hypertonic for the roadside plants. More water diffuses out of the root cells into the surroundings than the amount diffusing in. This can be fatal for the roots and the whole plant.
2. Seawater is hypertonic for the people. Their cells will dehydrate from losing too much water. First they'll be sick, and then they'll die.
3. Sugar makes the surroundings hypertonic for the strawberries. More water diffuses out of the cells into the sugary surroundings than the amount of water that diffuses into the cells. So the surroundings become wetter, the strawberries become softer. Yum! Pass the Cool Whip, please!
2007-12-13 14:38:10 · answer #1 · answered by ecolink 7 · 2⤊ 0⤋
A saturated fat is a fat that is solid at room temperature and comes chiefly from animal food products. An unsaturated fat is a fat that is liquid at room temperature and comes from a plant such as olive, peanut, corn, cottonseed, sunflower, safflower, or soybean (tend to lower the level of cholesterol in the blood). A polyunsaturated fat is a fat or oil based on fatty acids such as linoleic or linolenic acids which have two or more double bonds in each molecule; corn oil and safflower oil are examples.
2016-04-09 02:00:15 · answer #2 · answered by Anonymous · 0⤊ 0⤋