Answer: It describes water molecules moving across a membrane, which allows the water molecules to pass in and out freely, but forbids the motion of other molecules.
Explanation:
A in Biology class last year.
Ethonal is produced during b. Alcohol fermentation that converst sugars into ethanol.
Answer:
Salt in the ocean comes from rocks on land. The rain that falls on the land contains some dissolved carbon dioxide from the surrounding air. This causes the rainwater to be slightly acidic due to carbonic acid (which forms from carbon dioxide and water).
Answer:
B
Explanation:
When deforestation takes place, it heats up the atmosphere causing more global warming.