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Exposure to the DDT was causing the birds to lay eggs with much thinner egg shells, leading to fewer eggs surviving long enough to hatch.
Children who are raised with little to no exposure to one-on-one conversations, can have problems connecting auditory inputs with lip and tongue movements.
So ecologists, biologists, and other scientists studied data from the three D’s and eventually came to a consensus: exposure to a pesticide was mostly to blame for the eagle’s decline.
People of color in the United States, for example, disproportionately face poverty, exposure to pollutants, and reduced access to medical care, which in turn affects their health – and that impact on their health then gets misattributed to genetic differences.