Be respectful. Helpful. Understand exactly what's being asked of you. are a few
B is the answer to your question! hope I helped!!!
The cell requires a barrier between itself and its environment.
The correct answer is B. Pain receptors. Pain receptors are activated by a type of stimulation such as getting hit or cut. These receptors carry this information to our brain using neurotransmitters which then our brain interprets this as pain.
The hawk would get the least energy because it is at the top of the food chain, and 90% of energy is released into the environment on each level
