Answer:
1. Earth's temperature is maintained by re radiated infra red radiation by green green house gases and slightly by water vapors in atmosphere. These gases prevent heat from escaping to outer space, so are functionally comparable to glass panel of green house. Thus, this heating effect is referred to as green house effect. Carbon dioxide is a green house gas so increased amount of this gas in the atmosphere will result in increased atmospheric temperature and global warming.
2. Three sources of atmospheric carbon dioxide are:
- Volcanic eruption
- Respiration by plants and animals
- Decomposition of organic substance.
Explanation:
- <u>Overall rise in temperature </u>of the Earth due to excessive amount of green house gases in atmosphere that trap heat radiating from Earth's surface is called Global warming.
- Global warming can cause melting of ice caps, alteration of seasons, destruction of forest and increase in deserts.
- Green house gases include carbon dioxide, methane, ozone, nitrous oxide, and nitrogen dioxide etc.
- Among all these gases Carbon dioxide is the major component that is responsible for global warming.
- Carbon dioxide is added to the atmosphere by burning of fossil fuels, volcanic eruption and respiration. But Burning of fossil fuels itself adds about 18 X 10¹² tonnes of CO₂ anually.
- Global warming has become a major environmental concern now and needs to be controlled immediately.
Answer:
71%
Explain-About 71 percent of the Earth's surface is water-covered, and the oceans hold about 96.5 percent of all Earth's water. Water also exists in the air as water vapor, in rivers and lakes, in icecaps and glaciers, in the ground as soil moisture and in aquifers, and even in you and your dog
Answer: Distance
Explanation: The amount of space between two points, measured along the actual path, which connects the two points, is called distance. The amount of space between two points, measured along the minimum path which connects them, is called displacement.
Answer:
O principal objetivo da prática 12 é reduzir as perdas e usar os recursos naturais de maneira adequada.
Explanation:
Consumo sustentável significa que o uso dos recursos naturais é muito eficiente para evitar a poluição do meio ambiente. recicle o material usado e use-o novamente para reduzir o custo e também a poluição que ocorre durante sua fabricação. Use materiais que não agridam o meio ambiente e reduzam o uso de combustíveis fósseis. Reduzir perdas de alimentos e também evitar perdas que ocorrem após a colheita da colheita, a fim de fornecer mais alimentos para a população existente. O resultado esperado com a prática número 12 para um consumo mais sustentável pela população global é que mais alimentos e recursos estejam disponíveis para a população existente. população.
Here is the complete statement:
The black footed ferret specie can be saved by the ENDANGERED SPECIES ACT. The US FISH AND WILDLIFE SERVICES will manage the Act.
EXPLANATION:
An endangered specie refers to an animal or plant species, whose population has become very low and is in danger of becoming extinct in the nearest future. In the United States of America, such plants and animals are usually managed by the Us Fish and Wildlife services. This is a federal agency that is responsible for the management of different forms of wildlife, fish and natural habitats within the US.
The Endangered Specie Act is a US law that makes provisions for the management of both plants and species, which are deem to be on the verge of becoming extinct. The law makes provisions for the conservation of endangered living organisms and their natural habitats. The endangered specie Act prohibits the hunting or killing of endangered species; acting contrary to this law usually carry severe penalties.
