<span>Digestive enzymes are prolific inside the lysosomes. The organelle is named as such because these enzymes engage in "lysing" activity, meaning that the break up the worn-out cell parts or other wastes that the structure engulfs.</span>
A baby's immune system is not fully developed until he/she is about six months-old. In the meantime, pregnant mothers pass immunoglobulin antibodies from their bloodstream, through the placenta, and to the fetus. These antibodies are an essential part of the fetus's immune system. They identify and bind to harmful substances, such as bacteria, viruses, and fungi that enter the body. This triggers other immune cells to destroy the foreign substance.
Your answer is D
Gravel sized particals
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The answer would be the first one :)
