Resources (air, water, food, sun, light, etc.)
Genes and environmental forces shape development, thereby many human characteristics are EPIGENETIC. This field (epigenetics) is the intersection between genes and the environment.
Epigenetics refers to the study of gene expression patterns that do not involve a change in the nucleotide (DNA) sequence.
Epigenetic mechanisms include DNA methylation, histone modifications and non-coding regulatory RNA pathways.
These epigenetic mechanisms work together with environmental factors to shape the development.
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Answer:
because the beaks are different and since they prefer other avaliable seeds.
because the population changes over time its called natural selection, in darwins drawings there were extremely different from eachother.
because when he drew normal finches and went to galapagos islands he saw that there were also finches but they looked completely different and he analyzed their beaks. there are animals who change over natural selection
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Answer:
Myelin. a fatty substance that forms a protective coating around the axon of a neuron
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The answer is "All of the above".