B. Break down dead organisms
Fungi are decomposers. they breakdown the bodies of dead organisms. They play a very important role.
It's actually A. Vertebrate have a hard out shell.
Convection currents are caused by the colliding of cold and warm air. At night, air above water is warm and air above land is cold. The opposite is true in daytime. When the warm air hits the cold air, which is more dense, it is pushed upward. Then it travels laterally until it cools. It comes back down and pushes up the former cold air, which is now warm. This repeats many times.
Consumers. we are on top of the food pyramid being lead consumers
