Answer:
The lowest layer has the highest pressure
Crocodiles care for their young and have a four-chambered heart.
Increased leaf surface area
Answer:
C. Viruses use living cells to make new viruses
Explanation:
Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce other viruses like themselves. This can kill, damage, or change the cells and make you sick. Different viruses attack certain cells in your body.
