Management of Natural Resources Test - 6

Ozone layer is important because it prevents too many harmful ultra violet rays from reaching earth. Ultra violet rays have the capability to destroy plants and animals and can cause skin cancer, cataracts to human beings. Existence of life on earth is possible only because of the presence of ozone layer around the earth

The burning of fossils fuels produces lots of CO₂ that is one of the major green house gas. This has resulted in the increase in temperature on the earth called Global warming.

'All of these ' option1 is correct because option  2.Pollen is found naturally in the air, human activities and choices can increase the amount of pollen in our air, and in turn, can cause people to have more severe allergic reactions.

Option 3.Volcanic eruptions release large quantities of greenhouse gases and other aerosols into the atmosphere which causes pollution

Option 4. The burning of fossil fuels to produce energy also releases significant amounts of carbon dioxide and other greenhouse gases into the environment

The evidence for the absence of oxygen in the early atmosphere comes from the fact that the early organisms were able to survive long enough and evolve into more viable forms (which were able to exist).

Then, how did we get oxygen in the atmosphere?

Early living organisms like blue-green algae could carry out the process of photosynthesis and release oxygen gas.

Early organisms are known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen. 

In fact, all the plants on Earth incorporate symbiotic cyanobacteria (known as chloroplasts) to do their photosynthesis of early days where no oxygen is present to this day.

The Chipko Andolan - or the ‘Hug the Trees Movement’ was the result of a grassroot level effort of the local people to protect the forests. The movement originated

from an incident in a remote village called Reni in Garhwal in the Himalayas during the early 1970s. The local people hugged the tress and prevented the contractors from felling the trees.

None of the options are incorrect because of the below mentioned interpretation of each option.

In comparison to all other arable crops sugarcane requires high levels of water and also has one of the longest growing periods.

Most of the air pollution that is caused is due to soil erosion. The soil particles carried in the air lead to dust. The air might also contain chemicals from agricultural lands. This soil dust in the air often leads to respiratory problems and skin infections in humans causing environment pollution

Soil pollution allows emission of relatively large quantities of nitrogen via denitrification, volatilization of ammonia, and the decomposition of organic materials in the soil. As a result, this releases sulfur compounds and sulfur dioxides into the atmosphere, causing acid rain.

Nandankanan Zoological Park is a 400-hectare (990-acre) zoo and botanical garden in Orissa, India. Established in 1960, it was opened to the public in 1979 and became the first zoo in India to join (WAZA) in 2009.

Aluminum is a durable and sustainable metal: Two-thirds of the aluminum ever produced is still in use today.

Carboxyhemoglobin is a stable complex of carbon monoxide and hemoglobin (Hb) that forms in red blood cells upon contact with carbon monoxide (CO).