Atomic number=protons=neutrons or, A-P-E. So, an element like this doesn't exist because protons and electrons have the same number.
Answer:the answer is B,D, and E
Explanation:
Answer:
1.chemical receptors
2. nerves carry signal to the brain
3. nerves carry signals to the muscle
4. the brain process these signals
5. the shark changes direction and swims towards pray
Explanation:
