Environmental issues are disruptions in ecosystems caused by humans or nature. Environmental protection aims to safeguard natural environment for both humans and environment. Environmentalism addresses issues through advocacy, legislation, education, and activism
Contrails are line-shaped clouds produced by aircraft engine exhaust. Primarily composed of water in ice crystal form. Form at high altitudes above 8,000m with temperatures below -36.5°C. Can persist for hours and spread to several kilometers wide
Willows comprise around 350 species of deciduous trees and shrubs. Found primarily on moist soils in cold and temperate regions. Have watery bark sap, soft wood, slender branches and large fibrous roots. Leaves are typically feather-veined, linear-lanceolate with serrated edges
Founded in 1894 by Pierre de Coubertin and Demetrios Vikelas. Headquartered in Lausanne, Switzerland with 105 active members. Organizes Summer, Winter, and Youth Olympics every four years
Water pollution is contamination affecting water bodies' uses due to human activities. Main sources include sewage, industrial, agricultural activities and urban runoff. Pollution can affect both surface water and groundwater
View others from different perspectives to avoid personal bias. Show genuine kindness and appreciation to build trust. Smile at strangers and compliment others sincerely. Avoid comparing yourself to others and take credit for others' achievements