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Q8: Much of the tropical rain-forest land that
Q22: Sea jellies lack a circulatory system because:<br>A)they
Q26: In the soil, _ convert atmospheric nitrogen
Q27: Iron is a limiting factor in many
Q39: Hormones are secreted by exocrine glands. True
Q74: The greatest threat to newly hatched sea
Q75: The drying and warming of air that
Q82: The _ system is composed of the
Q90: The single greatest threat to marine life
Q116: Plants with reduced leaves and thick stems