This
is a specific response because in order to fight antigens, white blood cells,
the most important cells of the immune system, must produce large, Y-shaped
proteins known as antibodies to fight these invaders. This is a type of
specific defense (as I have identified antibodies as specific defenses is the
chart above).
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I believe the correct answer is upwelling. Lets say we have producers such as plankton. well upwelling currents bring dead matter from the ocean floor up to the surface, creating plankton.
Answer:
organisms have the amazing ability to make (produce) their own energy-rich food molecules from sunlight and simple chemicals.
Explanation: