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The three particles that make up atoms are A. protons, neutrons, and isotopes. B. neutrons, isotopes, and electrons. C. positives, negatives, and neutrals. D. protons, neutrons, and electrons.
Weegy: C. Electrons are particles that have a negative charge. User: Solutions that have more OH– than H+ ions are A. reactants. B. acids. C. bases. D. enzymes. Weegy: Solutions that have more OH? than H+ ions are c. BASES. User: Which of the following is NOT a characteristic of all living things? A. growth and development B. ability to move C. response to the environment D. ability to reproduce Weegy: Living things have a variety of common characteristics. * Organization. [ Living things exhibit a high level of organization, with multicellular organisms being subdivided into cells, and cells into organelles, and organelles into molecules, etc. * Homeostasis. Homeostasis is the maintenance of a constant (yet also dynamic) internal environment in terms of temperature, pH, water concentrations, etc. Much of our own metabolic energy goes toward keeping within our own homeostatic limits. If you run a high fever for long enough, the increased temperature will damage certain organs and impair your proper functioning. Swallowing of common household chemicals, many of which are outside the pH (acid/base) levels we can tolerate, will likewise negatively impact the human body's homeostatic regime. Muscular activity generates heat as a waste product. This heat is removed from our bodies by sweating. Some of this heat is used by warm-blooded animals, mammals and birds, to maintain their internal temperatures. * Adaptation. Living things are suited to their mode of existence. Charles Darwin began the recognition of the marvellous adaptations all life has that allow those organisms to exist in their environment. * Reproduction and heredity. Since all cells come from existing cells, they must have some way of reproducing, whether that involves asexual (no recombination of genetic material) or sexual (recombination of genetic material). Most living things use the chemical DNA (deoxyribonucleic acid) as the physical carrier of inheritance and ... (More)
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Asked 1/8/2013 10:17:47 AM
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3r = 10 + 5s, when r = 10?
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Solve for x. 7(x - 3) + 3(4 - x) = -8
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