Answer:SHANGHAI—For over three decades the Chinese government dismissed warnings from scientists and environmentalists that its Three Gorges Dam—the world's largest—had the potential of becoming one of China's biggest environmental nightmares. But last fall, denial suddenly gave way to reluctant acceptance that the naysayers were right. Chinese officials staged a sudden about-face, acknowledging for the first time that the massive hydroelectric dam, sandwiched between breathtaking cliffs on the Yangtze River in central China, may be triggering landslides, altering entire ecosystems and causing other serious environmental problems—and, by extension, endangering the millions who live in its shadow.
giving put free brainliest go awnser the rest of my questions
( Canada ) The Environment - Preservation
4 Pollution Sources and their Effects
possible solutions
Answer:
Explanation:
1. Air pollution
There are two types of air pollutants: primary and secondary. Primary pollutants are emitted directly from their source, while secondary pollutants are formed when primary pollutants react in the atmosphere.
The burning of fossil fuels for transportation and electricity produces both primary and secondary pollutants and is one of the largest sources of air pollution.
Vehicle exhaust contains hazardous gases and particulate matter, including hydrocarbons, nitrogen oxides, and carbon monoxide. These gases rise into the atmosphere and react with other atmospheric gases, creating even more toxic gases.
Heavy use of fertilizers in agriculture is a major source of fine particle air pollution, according to the Earth Institute, affecting much of Europe, Russia, China and the United States. The level of pollution caused by agricultural activities is believed to exceed all other sources of fine particle air pollution in these countries.
Ammonia is a major air pollutant from agricultural activities. Ammonia enters the air as a gas from concentrated animal waste and overfertilized fields.
This ammonia gas then combines with other pollutants such as nitrogen oxides and sulfates from vehicles and industrial processes to form aerosols. Aerosols are tiny particles that can penetrate deep into the lungs and cause heart and lung disease.
Other agricultural air pollutants include pesticides, herbicides and fungicides. All this also contributes to water pollution.
2. Water pollution
Nutrient pollution is caused by sewage, sewage and fertilizers. The high levels of nutrients in these springs enter water bodies and encourage the growth of algae and weeds, which can make the water undrinkable and deplete oxygen, leading to the death of aquatic life.
Pesticides and herbicides applied to crops and residential areas are concentrated in the soil and carried to the groundwater with rainwater and runoff. For these reasons, every time someone drills a well for water, it must be checked for contaminants.
Industrial waste is one of the main causes of water pollution as it creates primary and secondary pollutants including sulphur, lead and mercury, nitrates and phosphates, and oil spills.
In developing countries, about 70% of solid waste is dumped directly into the ocean or sea. This causes serious problems, including harming and killing sea creatures, which eventually affects people.
3. Pollution of land and soil
Land pollution is the destruction of land as a result of human activities and misuse of land resources. It occurs when people apply chemicals such as pesticides and herbicides to the soil, improperly dispose of waste, and recklessly exploit minerals in mining.
The soil is also polluted by leaking underground septic tanks, sewer systems, leaching of harmful substances from landfills, and direct discharge of sewage from industrial plants into rivers and oceans.
Rain and flooding can carry pollutants from other already polluted lands to soil elsewhere.
Over farming and overgrazing as a result of agricultural activities causes the soil to lose its nutritional value and structure, causing soil degradation, another type of soil pollution.
Landfills can leach harmful substances into soil and waterways and create very unpleasant odors and are breeding grounds for rodents that carry disease.
4. Noise and light pollution
Noise is considered an environmental pollutant caused by domestic sources, public events, commercial and industrial activities, and transportation.
Light pollution is caused by prolonged and excessive use of artificial lighting at night, which can cause health problems for humans and disrupt natural cycles, including wildlife activities. Sources of light pollution include electronic billboards, night sports venues, street and car lights, city parks, public places, airports, and residential areas.
( brainliest & 30 points )Canada & the United States (US)
What provinces and States run along the Canadian and US border?
Create a table to compare Canada & United States
COUNTRY: Canada & United States
Population (million)
Land Area (million km2)
Answer:
Maine, New Hampshire, Vermont, New York, Pennsylvania, Ohio, Michigan, Minnesota, North Dakota, Montana, Idaho, Washington, and Alaska border Canada
Explanation:
Let me know if I need to add any more to it. The way I found my answer was by looking at a map.
Answer:
British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, Quebec, New Brunswick, Yukon
Explanation:
When the federal government gives money to a state, the state is often required to
______ each Federal dollar.
1. Match
2. double
Answer:
I believe that the answer will be 'match' each federal dollar
Explanation:
A Small World
How is the world connected through ‘Travel’ and ‘Communications’. Give examples
Answer:
The word is connected through travel because It connects different cultures and people with different ideas. Such as when an American person goes to India and is inspired to learn more about indian cultures and ways of life. This leads on to communication because that same American needs to communicate with people in India to learn more about their culture
Explanation:
Travel and communication is connected through culture and ideas. If there was no communication then an idea would not be able to spread. If there was no travel then culture would not be able to be spread.
how did the people of SE asia increase the productivity of the mountainous farmland?
A. greenhouse
B crowded flatland farming
C. terrace farming
(why do i keep getting warnings for no reason)
Answer: C
Explanation: Terrace farming was common in SE asia and it was carved into the mountainside to provide different climates depending on the altitiude.
How long could short legless lizards get in wildlife?
Answer:
Size of legless lizard depends on the species. Largest legless lizards can reach 2 to 3 feet in length (including the tail) and 11 to 21 ounces in weight. Males are usually larger. Tail of legless lizard is two times longer than the body.
During Muslim conquests, the
influence of Islam spread throughout
A. Australia
B. New Zealand
North Africa and parts of Europe
Answer:
North Africa and parts of Europe
Explanation:
Hope this helps
( brainliest guranteed )Canada & the United States (US)
What provinces and States run along the Canadian and US border?
Create a table to compare Canada & United States
COUNTRY: Canada & United States
Population (million)
Land Area (million km2)
Answer:
Alaska shares the longest border with Canada of any state. ...
Idaho shares a 45-mile (72 km) long boundary with British Columbia. ...
Montana is the only American state that borders more than two Canadian provinces.
Explanation:
sorry if this didn't help
i'm not sure
How do ethical and religions traditions affect the population of Japan?
Answer:
less than 50 percent of Japanese
Explanation:
less than 50 percent of Japanese people identify themselves as active members of a religious group, a majority of individuals do partake in traditional practices involving praying to Shinto gods, or kami, and visiting shrines and temples on special occasions.
Why were the Tigris and Euphrates
Rivers so important to ancient
Mesopotamia?
A. They allowed the Mesopotamians to grow crops.
B. They gave the Mesopotamians a place to swim.
C. They gave the Mesopotamians a place to ride
their boats.
Answer:
A
Explanation:
The river were very important to the ancient Mesopotamian civilizations helping them form agriculture.
What types of clouds are there?
Which altitude are they on?
Answer:
There are high-level clouds, mid-level clouds, and low-level clouds. The altitude of each type of cloud is 20,000 ft, 6,500-20,000ft, and under 6,500 ft, respectively.
Explanation:
High-level clouds consist of three subtypes of clouds: cirrus, cirrostatus, and cirrocumulus clouds.
Mid-level clouds consist of two subtypes of clouds: altocumulus, and altostratus clouds.
Low-level clouds consist of two subtypes of clouds: stratocumulus, and nimbostratus clouds
Answer:
Explanation:Cirrus (meaning hair like), Stratus (meaning layer), Cumulus (meaning pile) and Nimbus (meaning rain producing).
What relationship exists between wind speed and air-pressure gradient?
A. High wind speeds result from a gradual air-pressure gradient.
B. High wind speeds result from a steep air-pressure gradient.
C. Low wind speeds result from a steep air-pressure gradient.
D. Low wind speeds result from a lack of air pressure.
The Maya adapted to a rainforest environment by using loincloths. A loincloth was __________.
A. a piece of cloth draped across the lower part of the body
B. a string and knot system used for record keeping
C. a platform constructed to keep a building above flood water
D. a canal used to bring water to areas too dry for farming
Option A.
Loincloth is a piece of cloth worn with some belts at lower parts.
IK its not a question but give me your answers to let me know....!
In what part of the country west of the Mississippi River would you like to live? Why?
Answer:
probably california
Explanation:
Answer: Kentucky
Explanation:
The only reason I say KY is cause, they're know for their wild flower feilds and tall, fancy horses and dogs along with big land and hills and forset. Overall, it's just so natural and less city like.
If you could add an objective to the U.N. Charter, what would you add?
Answer: intergovernmental organization whose purpose is to maintain international peace and security, develop friendly relations among nations, achieve international cooperation, and be a centre for harmonizing the actions of nations. It is the world's largest and most familiar international organization.
Explanation:
What is latitude and longitude? (serious answers only).
Answer:
latitude are the lines that go around earth from North to south so horizontal lines and longitude is the opposite so lines that go around from west to east so vertical lines
Explanation:
