Particle theory is the theory that Light consists of a stream of small particles, because it travels in straight lines at great speeds is reflected from mirrors in a predictable way. On the other hand the Wave theory is that light is a wave, because it undergoes diffraction and interference (Young's double–slit experiment).
I believe the answer is a. thick layer of blubber
Mammal is an warm-blooded animal that need to keep their body warm. Organ that could insulate the heat would be beneficial to keep the temperature, like layer of fat or thick fur. The example of marine mammals would be dolphin, whale, sea lion and polar bear. Thick fur will not give much benefit for mammals in water, so only polar bear have thick fur. But all of them has thick layer of blubber, so option A will be the most appropriate.
Answer:
3
Explanation:
they are called herbivores
Molecules in cells that help build up and break down things
I believe they are made of the same thing our ribs are made of Bones
