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Some alleles are dominant, meaning they ultimately determine the expression of a trait. Other alleles are recessive and are much less likely to be expressed. When a dominant allele is paired with a recessive allele, the dominant allele determines the characteristic.
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Humans are increasingly influencing the climate and the earth's temperature by burning fossil fuels, cutting down rainforests and farming livestock. This adds enormous amounts of greenhouse gases to those naturally occurring in the atmosphere, increasing the greenhouse effect and global warming
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Starting with energy sources obtained from their environment in the form of sunlight and organic food molecules, eukaryotic cells make energy-rich molecules like ATP via energy pathways including photosynthesis, glycolysis, and oxidative phosphorylation.
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The melting of tectonic plates by particularly hot parts of the Earth's crust
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The food you've eaten goes down your oesophagus to your stomach, then to your small intestine, large intestine, and out out the anus during digestion, which can take anywhere from 24 to 72 hours.
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