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DNA is made up of molecules called nucleotides. Nucleotides are attached together to form two long strands that spiral to create a structure called a double helix. If you think of the double helix structure as a ladder, the phosphate and sugar molecules would be the sides, while the bases would be the rungs.
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A population is a group of people living in one area. A community is all the populations in a certain area.
Because the charge of electrons is opposite in sign than protons, the two types of particles attract each other, and this force, known as the Coulomb force, holds the atom together. Electrons travel around the nucleus in orbitals, but it is impossible to know both the speed and location of an electron at the same time.:) let me know if this helped
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These organisms are called the producers, and they get their energy directly from sunlight and inorganic nutrients. The organisms that eat the producers are the primary consumers. They tend to be small in size and there are many of them. The primary consumers are herbivores (vegetarians).
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Eukaryotic cells make energy-rich molecules such as ATP and NADH through energy pathways including photosynthesis, glycolysis, the citric acid cycle, and oxidative phosphorylation, beginning with energy sources obtained from their environment in the form of sunlight and organic food molecules.
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