|Thread title||Replies||Last modified|
|Midterm Topic- Ensure Environmental Sustainability||0||11:08, 30 July 2012|
|Planet Earth||0||10:29, 30 July 2012|
Ensure Environmental Sustainability
We need to act quickly to response for our blue planet.
Animal populations are disappearing at alarming rate, protecting animal species also contributes to a thriving, healthy planet for people’s health and well-being, and preserve the forest that slow climate change and filter water to ocean that provide more and 1/6 of the world’s food. U.S. Environmental Protection Agency conducts ecological risk assessments to determine the ecological effects or toxicity of a pesticide and its breakdown products to various terrestrial and aquatic animals and plants and the chemical fate and transport of a pesticide in soil, air, and water resources. Environmental laws will not be effective unless facilities comply. Pesticides are regulated under several laws, primarily the Federal Insecticide, Fungicide, and Rodenticide Act which authorizes EPA to oversee the registration, distribution, sale, and use of pesticides. The Act applies to all types of pesticides, including insecticides, herbicides, fungicides, rodenticides, and antimicrobials.
1. Public Participation Processes 2. Evaluating Potential New Pesticides and Uses
Association of American Pesticide Controls Officials[]
The Big Blue Marble
Earth, our home planet, is the only planet in our solar system known to harbor life. All of the things we need to survive are provided under a thin layer of atmosphere that separates us from the uninhabitable void of space. Earth is made up of complex, interactive systems that are often unpredictable. Air, water, land, and life—including humans—combine forces to create a constantly changing world that we are striving to understand.
Oceans at least 2.5 miles (4 kilometers) deep cover nearly 70 percent of Earth's surface. Fresh water exists in the liquid phase only within a narrow temperature span (32 to 212 degrees Fahrenheit/ 0 to 100 degrees Celsius). This temperature span is especially narrow when contrasted with the full range of temperatures found within the solar system. The presence and distribution of water vapor in the atmosphere is responsible for much of Earth's weather.
Near the surface, an ocean of air that consists of 78 percent nitrogen, 21 percent oxygen, and 1 percent other ingredients envelops us. This atmosphere affects Earth's long-term climate and short-term local weather; shields us from nearly all harmful radiation coming from the sun; and protects us from meteors as well. Satellites have revealed that the upper atmosphere actually swells by day and contracts by night due to solar activity.
National Geographic []