Question

Define the term “bioconcentration” and explain in two to three sentences how certain chemicals used in pest control may affect all organisms in an ecosystem.

Using one or two sentences for each item, define each of the following environmental issues and explain the contribution of human technological advances to each: toxic waste, eutrophication, thermal pollution, smog, acid rain, the greenhouse effect, overgrazing, deforestation, erosion, and the introduction of invasive species.

Answer 1

It is the process of bioaccumulation that leads to the accumulation of toxic chemicals in the tissue or body of a particular organism which are tress trial and aquatic.
DDT used as insecticide in1950s and 1960s due to which birds of prey were badly killed.
The pest control agent may enter the food chain and eventually damage the crop and reduce the life cycle of human also use full organism like earthworm, rhizobia are killed

When we talk about toxic waste they are unwanted waste that can cause harm to humans by being inhaled, swallowed, or eaten absorbed through the skin. It is battery, mercury y from thermometer or sludge and cadimum heavy metals like lead.

Eutrophication
This happens when a lot of chemical nutrients like phosphorus, sugar, salts are put in a lake or other body of water, regular due to run-off from the land or industries, which lead to a dense growth of plant life.
Inclusion of lot waste to water body is the cause.

Thermal pollution is caused when human activities release harmful bad heated liquid into water waste product., caused du to continuously used for cooling water in water power plant and the left over is throw in nearby water system
Greenhouse effect occurs by the interaction of the energy given with greenhouse gases such as carbon dioxide, methane, nitrous oxide and fluorinated gases in the Earth's atmosphere. The ability of these gases to trap heat is what causes the greenhouse effect.
Smog is a type yellow or black fog formed due to mixture of pollutants or gaseous toxins in the atmosphere which consists of fine material particles and ground level ozone. The main sources of these are the precursors which act as pollutants which are released directly into the air by gasoline, petrol run, diesel-run vehicles, and industries.
Deforestation it is process of the removal or destruction or breakage of large areas of forest or tress, rainforest. Reasons like as logging, agriculture, natural disasters, urbanization, industrialization and mining.
It is process in which natural forces like water, wind, ice, soil and gravity cut away or wears away rocks, sand and soil. This is a type of is a geological process, or the rock cycle.
An invasive species are type of living organisman amphibian , plant, ants , rats,insect, fish, virus, fungus, bacteria, or even an organism's harmful substance seeds or eggs t whichis part of organsim native and cause harm to ecosystem.