Agricultural pesticide contamination results from the use and/or misuse of agricultural pesticides, and is manifested as adverse effects on human health and the environment. An agricultural pesticide is any substance or mixture of substances intended for preventing, destroying or mitigating the effects of any pest that may adversely affect the growth and/or productivity of any agricultural product.

Plankton are drifting organisms in aquatic environments, including marine and fresh water. They are the base of the food web in these environments. Plankton can be divided into broad functional (or trophic level) groups…

Forestry is the science and practice of managing a forest for some goal. Prior to the establishment of forestry as a science-based discipline, the exploitation of forests for various products was carried out without sufficient regard for consequences. For example, trees were cut without ensuring tree regeneration.

Climate change refers to a change in the state of the climate that can be identified by changes in the average and/or the variability of its properties (e.g., temperature, precipitation), and that persists for an extended period, typically decades or longer.

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Deserts cover about one fifth of the Earth’s surface and occur where rainfall is less than 50 centimeters (cm) per year. Although most deserts, such as the Sahara of North Africa and the deserts of the southwestern U.S., Mexico, and Australia, occur at low latitudes…

The word “biodiversity” is a contracted version of “biological diversity”. The Convention on Biological Diversity defines biodiversity as: “the variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are a part; this includes diversity within species, between species, and of ecosystems.”

Estuaries are found throughout the world in coastal environments. An estuary is defined as a semi-enclosed coastal body of water with freshwater flowing into it and a connection to the open sea. An estuary typically forms at the tidal mouth of a river, and receives sediment or silt carried in from terrestrial runoff.

A tornado is a vortex of rapidly moving air associated with some severe thunderstorms. Tornadoes that travel across lakes or oceans are called waterspouts. Winds within the tornado funnel may exceed 500 kilometers per hour. High-velocity winds cause most of the damage associated with these weather events.