A List of Some Common Psychological Disorders. The term psychological disorder is sometimes used to refer to what are more frequently known as mental disorders or psychiatric disorders. Mental disorders are patterns of behavioral or psychological symptoms that impact multiple areas of life. These disorders create distress for the person experiencing these symptoms.
Because pesticides are toxic, they are potentially hazardous to humans, animals, other organisms, and the environment. Therefore, people who use pesticides or regularly come in contact with them must understand the relative toxicity and potential health effects of the products they use.
A pest is a plant or animal detrimental to humans or human concerns (as agriculture or livestock production); alternative meanings include organisms that cause nuisance and epidemic disease associated with high mortality (specifically: plague).In its broadest sense, a pest is a competitor of humanity.In the past, the term might have been used for detrimental animals only, thus for example, causing confusion where the generic term  pesticide  meant  insecticide  to some people.ny prolific animal or plant may be considered pests. Thus in contrast, to the single term pest, in composite terms, e.g. plant pest, agricultural pest livestock pest, the emphasis is always on the organisms or ecosystems infested and affected.