The correct answer is - ozone.
The ozone is essentially three molecules of oxygen, or O³. This gas is crucial for the life on the Earth because it is the one that manages to filter out big portion of the UV radiation from the Sun which is extremely harmful if its too strong, as it will contribute to the dying out of pretty much every living organism.
While the ozone layer in the stratosphere is very useful, the ozone in the lower parts of the troposphere is actually considered as pollutant. The reason why it is considered as pollutant is because it is very harmful if inhaled, and it also heavily damages the plants.
Answer:
The correct answer is B. Brazil's second largest city is about one-half the size of the largest city of that nation.
Explanation:
The most populous city in Brazil is the city of Sao Paulo, located in the state of Sao Paulo in the southeast of the country. This city, located about 80 kilometers from the coast, is the most populous city in all of South America with about 12,200,000 inhabitants.
In turn, the second most populous city in this country is the city of Rio de Janeiro, located in the state of the same name, which is located about 400 km east of Sao Paulo. This city, located on the coast of the Atlantic Ocean, has a population of 6,500,000 people.
Changes in the orbit of the earth caused the ice sheets to spread across Canada.
