Slide 2: Humans Have Done A Lot Of Harm To The Earth To Fulfill Their Needs By Few Processes And Some Of Them Are……
Slide 3: Global Warming
Overuse Of Fertilizers
Global Warming :
Global Warming Global warming
is when the earth heats up (the temperature rises). It happens when greenhouse gases (carbon dioxide, water vapor, nitrous oxide, and methane) trap heat and light from the sun in the earth’s atmosphere, which increases the temperature.
Global warming is affecting many parts of the world. Global warming makes the sea rise, and when the sea rises, the water covers many low land islands. This is a big problem for many of the plants, animals, and people on islands. The water covers the plants and causes some of them to die. When they die, the animals lose a source of food, along with their habitat
Resource Depletion : Resource Depletion Resource depletion is an economic term referring to the exhaustion of raw materials within a region. Use of resources beyond their rate of replacement is considered to be resource depletion.
Resource depletion is most commonly used in reference to the farming, fishing, mining, and fossil fuels.
Causes of resource depletion are:
Over-consumption/excessive or unnecessary use of resources
Non-equitable distribution of resources
Landfills : Landfills A landfill is a site for the disposal of waste materials by burial and is the oldest form of waste treatment. Historically, landfills have been the most common methods of organized waste disposal and remain so in many places around the world.
A large number of adverse impacts may occur from landfill operations. These impacts can vary: fatal accidents ; infrastructure damage; pollution of the local environment (such as contamination of groundwater and/or aquifers by leakage and residual soil contamination during landfill usage, as well as after landfill closure);; and simple nuisance problems.
Pollution : Pollution Pollution is the introduction of contaminants into a natural environment that causes instability, disorder, harm or discomfort to the ecosystem i.e. physical systems or living organisms. Pollution can take the form of chemical substances or energy, such as noise, heat, or light. Pollutants, the elements of pollution, can be foreign substances or energies, or naturally occurring.
There are a number of effects of pollution:
Biomagnification's describes situations where toxins (such as heavy metals) may pass through trophic levels, becoming exponentially more concentrated in the process.
Nitrogen oxides are removed from the air by rain and fertilize land which can change the species composition of ecosystems etc.
Overuse of fertilizers : Overuse of fertilizers Fertilizers enhance soil chemistry by introducing nutrients deficient in or lacking in soils. Fertilizers often contain a mixture of nitrogen, phosphorus and potassium in varying quantities, depending on the application. All of these chemicals occur naturally in the environment. Other ingredients may also be included. According to the USDA Economic Research Service, fertilizer use has steadily increased since 1960. While fertilizer application improves soil health and food quality, overuse has serious environmental impacts
Fertilizer overuse creates many problems, like aquatic dead zones, resource depletion and blue-baby syndrome.
Littering : Littering Littering is the act of dropping litter (waste that people unlawfully dispose off).
Littering can harm the environment in a number of different ways:
Its "ugliness" damages the appearance of scenic environments.
Uncollected litter can attract more, flowing into streams, and storm water drainage systems, local bays and estuaries.
Animals may get trapped or poisoned with litter in their habitats.
Cigarette butts and filters are a threat to wildlife and have been found in the stomachs of fish, birds and whales, who have mistaken them for food.
By:Simran Khurana 7- B : By:Simran Khurana 7- B