The answers is white blood cells. White blood cells are the cells of the immune system, it defends the body against infection and disease. All white blood cells are produced and derived from multipotent cells in the bone marrow called hematopoietic stem cells.
Im pretty positive the answer is D
hope it helps bro
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Answer:
Chemical digestion involves the secretions of enzymes throughout your digestive tract. These enzymes break the chemical bonds that hold food particles together. This allows food to be broken down into small, digestible parts.
Explanation:
<span>D is the correct answer. Coral reefs need sunlight to grow, so they grow best in shallow water (up to 50m deep) as this means sunlight can reach them. They require salt water to grow and warm temperatures of 20 - 32 degrees Celsius.</span>
