It carries signals for the body through nerves (answer 3)
Answer:
Physical adaptations do not develop during an individual animal's life, but over many generations. The shape of a bird's beak, the color of a mammal's fur, the thickness or thinness of the fur, the shape of the nose or ears are all examples of physical adaptations which help different animals survive.
Algae, phytoplankton, or any green plants.
The leading cause is garbage and waste from people.
Literally all I have is humor
