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.
Blood types are based on molecules called antigens and antibodies. Antigens are genetically unique molecules that occur on the surface of ALL cells. They
Blood types are based on molecules called antigens and antibodies. Antigens are genetically unique molecules that occur on the surface of ALL cells. They enable our body to distinguish its own cells (self) from foreign materials (non-self). Antibodies are proteins that are secreted as part of a specific immune response