The smallest living unit is actually a cell. An organelle is an organ inside of a cell. An organelle would not be considered alive because it can not survive without the other organelles. Whereas, a cell can survive without other cells.
Answer: Synthesizing antibodies.
Explanation:
A person should have a balanced diet which consists of fruits, vegetables, pulses and many more nutritious things.
Escaping from any of these food will cause problem in the body. A girl has skipped the protein intake inside the body by skipping the animal derived food ans is now depending on the plant source for the diet.
Sooner, she was ill and had infection in the body because there was lack of protein in her diet which lead to problem in synthesizing antibodies.
Reabsorption is the process
It requires water to breed since the sperms requires water to swim
there might be zero chances of the sperm coming in contact with the eggs
a larger percentage of gametes unfertilised and are wasted
there are a lot of environmental hazards