Answer: D
Explanation: when gasoline is burned by the car, it releases gas which pollutes the air.
The four lobes in the brain include the frontal, the parietal, the occipital, and the temporal.
Answer:
Explanation
During Anaerobic respiration, glucose breaks down without oxygen. The chemical reaction transfers energy from glucose to the cell. Anaerobic respiration produces lactic acid, rather than carbon dioxide and water. Unfortunately this can lead to painful muscle cramps.
The first known single-celled organisms appeared on Earth about 3.5 billion years ago, roughly a billion years after Earth formed. More complex forms of life took longer to evolve, with the first multicellular animals not appearing until about 600 million years ago.
