Because they have so many children at once.
Answer:
Phagocytosis
Explanation: Phagocytosis
occurs in the scavenging white blood cells of our body. They prowl around looking for invading bacteria and viruses which they engulf and destroy. Pinocytosis ("cell drinking") is almost the same process as phagocytosis, except it involves liquids instead of solids.
The answer is the muscular system
The light-independent reactions, or dark reactions, of photosynthesis are chemical reactions that convert carbon dioxide and other compounds into glucose.