It is necessary to search for new sources of energy because the sources we have now are non-renewable and exhaustible. The usage of these sources are increasing day by day and if this continues then one day we wlii be left with none so it is necessary to search for new sources of energy.

Renewable energy can play an important role in U.S. energy security and in reducing greenhouse gas emissions. Using renewable energy can help to reduce energy imports and reduce fossil fuel use, which is the largest source of U.S. carbon dioxide emissions.

Renewable energy sources are good for business, providing energy security, economic development, energy price stability, and reduces the global risks of climate change.

What are the disadvantages of renewable energy?

• Hydro generators need enough rain to fill dams for their supply of flowing water.
• Wind turbines need wind to turn their blades.
• Solar panels need clear skies and sunshine to get the heat needed to generate electricity.

Pros and cons of wind energy

Advantages of Wind Power

• Wind power is cost-effective.
• Wind creates jobs.
• Wind enables U.S. industry growth and U.S. competitiveness.
• It’s a clean fuel source.
• Wind is a domestic source of energy.
• It’s sustainable.
• Wind turbines can be built on existing farms or ranches.

Wind is a renewable energy source. Overall, using wind to produce energy has fewer effects on the environment than many other energy sources. Wind turbines may also reduce the amount of electricity generation from fossil fuels, which results in lower total air pollution and carbon dioxide emissions.

The U.S. Fish and Wildlife Service estimates that between 140,000 and 500,000 bird deaths occur at wind farms each year.

Wind Turbines Kill Birds. This Incredibly Simple Trick Has Saved Them. When a wind farm in Norway made this switch, bird deaths dropped by 70 percent. A study finds painting windmill blades reduced bird fatalities by over 70 percent.

In 2016, a first-of-its-kind study estimated that the hundreds of utility-scale solar farms around the US may kill nearly 140,000 birds annually.

Bird mortality associated with pesticides, oil spills, oil pools, and other contaminant sources have also received significant attention. Domestic and feral cats have also been considered a major source of anthropogenic-caused mortality with estimates near 100 million annual bird deaths.

The research shows that cats are the No. 1 killer by a long shot, racking in roughly 2.4 billion bird deaths each year, according to median estimates. Buildings take second, with nearly 600 million kills, and cars follow with nearly 200 million deaths.

Teflon and Non-stick Cookware – Overheated Teflon can cause almost instant death of your bird. Your bird should never be anywhere near Teflon or other non-stick cookware when it is being used. Metals – Tin found in aluminum foil, gum wrappers, and cans is toxic to birds.

Cassowary (Casuarius) The cassowary has been known to kill human beings with slashing blows of its feet, as the innermost of its three toes bears a long daggerlike nail. The bird slashed the boy’s jugular vein with its long toenail.

Mosquitoes

Bears. Polar bears, particularly young and undernourished ones will hunt people for food. Truly man-eating bear attacks are uncommon, but are known to occur when the animals are diseased or natural prey is scarce, often leading them to attack and eat anything they are able to kill.

Adult polar bears have no natural predators, though walruses and wolves can kill them.