The first Earth Day was held on April 22, 1970, the United States.
Gaylord Nelson of Wisconsin Senate worked, was a senator of the United States for 18 years. Nelson came up with the idea for Earth Day.
Every year on April 22, to discuss issues related to environmental pollution. Specific pollution and habitat destruction many plant and animal species are endangered.
Endangered species are plants and animals whose populations are so small that they can become extinct. Once an animal or plant is gone we will never see again.
Types of forests
Classification depends mainly forests position, distance from equator, altitude and climate.
Tropical forests - all year round temperatures are high and precipitation. Tropical moist forests are found near the equator. In tropical forests there is a season of drought. Most trees have crown umbeliforma.
Plants that attract rabbits and squirrels
Forest conservation weapon against climate change
Wangari Maathai, 68, Nobel Prize winner in 2004 for works of reforestation in Kenya, called for talks on climate change to focus on protecting forests, especially forests of Amazonia, Southeast Asia and the basin Congo.
Of NCAR scientists discovered that plants in a forest respond to stress by producing nuts in significant amounts to a form of aspirin.
Unlike humans, who are advised to take aspirin to decrease a temperature, plants and their ability to produce their own aspirin, leading to the formation of proteins that stimulate the biochemical defense system, says Thomas Karl, NCAR, which led study.