Answer:
The feeling of the heart skipping a beat is common
<span>The different types of immune response fall into two categories; innate (non adaptive) and adaptive immune responses.
All the Best. :D</span>
The role of the plants is to maintain the atmosphere and to produce oxygen and to absorb carbon dioxide
Answer:
You are using energy from the sun to power this activity of walking your dog because the sun's energy is used to make glucose in photosynthesis, and glucose gives you and other humans energy in cellular respiration. If you didn't have glucose to turn into energy from the sun's original energy, you couldn't walk your dog.
The left ventricle I believe?