Answer:
Three adaptations of clam can be described as follows:
1. Clams have the ability to enclose themselves in shells. This adaptations prevents them to be eaten up by predators.
2. Clams are known to have muscular foot. This adaptation enables them to burrow into the sediment.
3. Clams reproduces by releasing large number of eggs in the water which are fertilized by the sperm. There method of reproduction is ideal to survive in an aquatic environment.
Answer:
True
Explanation:
They can be classified as either eukaryotes or prokaryotes :)
Answer:
In hot, steamy rainforests, the tightly packed trees grow rapidly and to great heights. This is because they are all competing for sunlight. The taller the tree, the more light its leaves will receive.
An ion is a molecule that is charged because it has lost or gained an electron. The cell membrane is made of a bilayer of phospholipids, with an inner and outer layer of charged,hydrophilic "heads" and a middle layer of fatty acid chains, which are hydrophobic, or uncharged. Charged ions cannot permeate the cell membrane for the same reason that oil and water don't mix: uncharged molecules repel charged molecules. Even the smallest of ions -- hydrogen ions -- are unable to permeate through the fatty acids that make up the membrane. If ions "want" to enter the cell due to a high concentration of that type of ion on one side of the cell, they can do so by entering through the protein channels that are embedded between the lipids.
Might be a bit long but I hope that this helps!