A hormone is a molecule that functions as a chemical signal. A hormone is a chemical released by a cell or a gland in one part of the body that sends out messages that affect cells in other parts of the organism. Endocrine hormone molecules are secreted (released) directly into the bloodstream. !
Sex cells are haploid, therefore it has half the number of chromosomes (23) while other cells have 46
Answer: Water, in its many forms, moves all over the Earth. Water vapor moves with the air currents, falling as rain from the clouds. Frozen glaciers creep slowly down from polar regions, then recede as they warm and melt. Liquid water moves from rushing rivers to ocean currents or to groundwater.
The water, or hydrologic, cycle describes the pilgrimage of water as water molecules make their way from the Earth's surface to the atmosphere and back again, in some cases to below the surface. ... Earth's water continuously moves through the atmosphere, into and out of the oceans, over the land surface, and underground.
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The answer is A
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The answer is A because the sun is not a producer and only helps producers.
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Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.
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