B. Four bonds
Carbon usually form covalent bond and can form ionic or other bonds sometimes. Carbon needs four electrons to be stable so the max of bonds a single carbon atom can form is four
Answer Explanation:
Due to technical difficulties, the answer and explanation for this problem are available in the attached file.
A long reflexive pathway has an advantage over a short reflexive pathway in the fact that they can be also be stimulated by the central nervous system, whereas the short reflexive pathway is only stimulated by the enteric nervous system.
Answer: Exponential growth occurs when resources in the environment are abundantly available to a species.
Explanation: When a food source amount drops, so does the survival rate of the predator that eats that specific food source. When a food source grows too abundantly at too fast a rate, predators increase in numbers.
A substance, either an ion or an electrically neutral molecule, formed by the union of simpler substances (as compounds or ions) and are held together by forces that are chemical rather than physical.