Answer:
DNA fragments are negatively charged, so they move towards the positive electrode. Because all DNA fragments have the same amount of charge per mass, small fragments move through the gel faster than large ones.
Explanation:
Answer:
Density and density-independent factors for populations. Density-independent variables including geography and atmosphere affect city size independently of population density. The effects of density-dependent factors are, however, steadily increasing as the population grows.
Explanation:
Density and density-independent factors for populations. Density-independent variables including geography and atmosphere affect city size independently of population density. The effects of density-dependent factors are, however, steadily increasing as the population grows.
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Chemical energy is stored in the battery cells and converted to electrical energy when it's needed by the toy robot
