Calculate the power used in the 2ohm resistor in each of the following circuits:[Applying] a) a 6V battery in series with 1ohm and 2 ohm resistors. b) a 4V battery in parallel with 12 ohm and 2 ohm resistors. 3. (a) State and explain Joule’s law of heating
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Evolution is change in the heritable characteristics of biological populations over successive generations.[1][2] These characteristics are the expressions of genes that are passed on from parent to offspring during reproduction. Different characteristics tend to exist within any given population as a result of mutation, genetic recombination and other sources of genetic variation.[3] Evolution occurs when evolutionary processes such as natural selection (including sexual selection) and genetic drift act on this variation, resulting in certain characteristics becoming more common or rare within a population.[4] It is this process of evolution that has given rise to biodiversity at every level of biological organisation, including the levels of species
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