Been a bit since I learned this but I believe the answer is B.
Hope this helps.
Answer:energy
Explanation:all activities of life including physical and chemical require energy to proceed
Fixator (--) helps hold a bone in place
there is less energy on the 5th level, the less the energy, the smaller the food chain
Answer:
D: kinetic
Explanation:
Kinetic energy is the energy of motion. This can be the motion of large objects (macroscopic kinetic energy), or the movement of small atoms and molecules (microscopic kinetic energy).