The highest and lowest tides are known as the spring tides. when do these tides occur?

Modern whales developed their traits through natural selection what occurs during the process of natural selection

Which of the following is not a potential result of deforestation?

Which of the following types of pollution is most responsible for large numbers of deaths worldwide because of unsafe drinking water? (a) nutrient pollution (b) thermal pollution (c) pathogen pollution (d) sediment pollution