A food pyramid is a represntation of predatory relationships in the food chain.
Your answer is D. Anther. The stamen is a part of the flower that is “in charge” of the production of pollen, but the anther is the part in the stamen that actually produces the pollen.
The answer is Convergence of images behind the Retina
Convex lens converges light to a principal focus. The thickness of the lens determines the focal length (distance between the center of the lens and the principal focal point). Therefore, by evaluating the thickness of the convex lens, farsightedness, (an eye defect of convergence of images behind the retina) can be corrected by enabling images in the eye to form behind the retina.
The answer is a pathogen
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