Composed of a phospholipid bilayer.
Hydrophilic heads and lipophilic tails on the phospholipids.
The hedgehog are animals with spiny armor that protects it from predators and cushions its falls from trees. Animals have different survival mechanisms and means to protect themselves from possible predators. For example; a Camel has long eyelashes and hair-lined ears that blocks blowing sand, can close its nostrils to keep sand out. Others like Koala uses specially designed hands and feet and a thick, padded tail to hold on to tree branches for long periods of time.
When your body is dehydrated, the pituitary releases ADH hormone,
Answer:
This is generally called evolution. Species adapt to their surroundings to survive. Sometimes parts are added to help them, other times things are taken away to help them. Features are added to their bodies and minds to help them survive. Over time their bodies change.
