Answer:
I believe that it is D.
Explanation:
If ice caps are melting, and polar bears use the ice flows to get their food, then the polar bears can't use the ice to get food. so, the polar bears most likely are expanding their diets to adapt to their surroundings. So, polar bears are probably moving off the sea ice and eating other foods.
Birds and mammals independently evolved four-chamber hearts
All energy ends up as thermal energy, which is replenished every day by the concentrated energy from the sun.
Hope this helps!
Answer:
A. A tropical rainforest
Explanation: Because its a nice climate and that will make homes for many diffrent kinds of spicies that can survive in that type of environment.