Lake contamination is most likely caused by agricultural runoff containing pesticides and fertilizers, industrial discharges, untreated sewage, and stormwater runoff. These pollutants introduce harmful substances like heavy metals, pathogens, and nutrients, which can cause eutrophication, harm aquatic ecosystems, and endanger human health. Litter and plastic waste add to the contamination.
Two parents with children with Down syndrome meet at a clinic. The Walters know that their son has trisomy 21. The Benders, however, have two affected
Two parents with children with Down syndrome meet at a clinic. The Walters know that their son has trisomy 21. The Benders, however, have two affected children, and Mrs. Bender has had three spontaneous abortions. Explain why the Benders probably should be more concerned about future reproductive problems than the