What are the three classes of environmental agents?
The environmental agents are: 1. Infectious Organisms 2. Chemicals 3. Radiations 4.
What are the agents of environmental pollution?
Generally, there are three pollution agents namely as WATER,AIR and FOREST.
What are the 5 environmental factors?
Environmental factors include temperature, food, pollutants, population density, sound, light, and parasites.
What are the environmental agents that can lead to human health problems?
The 8 Environmental Factors That Can Impact Your Health
A number of specific environmental issues can impede human health and wellness. These issues include chemical pollution, air pollution, climate change, disease-causing microbes, lack of access to health care, poor infrastructure, and poor water quality.
What is an environmental agent that causes damage?
A teratogen is any environmental agent—biological, chemical, or physical—that causes damage to the developing embryo or fetus. There are different types of teratogens.
Is lead an environmental agent?
Lead occurs naturally in the environment – though most of the high levels found throughout the environment come from human activities. Before the 1950s, lead was used in pesticides applied to fruit orchards. Lead use increased between the years 1950 and 2000, and reflected increasing worldwide use of leaded gasoline.
What are the pollutants called?
Under the Clean Air Act, the National Ambient Air Quality Standards (NAAQS) are developed by the Environmental Protection Agency (EPA) for six common air pollutants, also called “criteria pollutants”: particulates; smog and ground-level ozone; carbon monoxide; sulfur oxides; nitrogen oxides; and lead.
What are 3 types of environments?
The three types of environment are the physical environment, social environment, and culture.
What are the four agents of water pollution?
Examples of major water pollutants that affect the health of humans are: the numerous infectious agents (bacteria, viruses, and parasites) that contaminate the water through sewage, human waste, and animal excreta. radioactive waste that contains highly toxic materials such as uranium, thorium, and radon.
What is agent of water pollution?
Other agents of water pollution exist in the forms of petroleum, radioactive substances, and heat. Petroleum often pollutes water bodies in the form of oil, resulting from oil spills. These large-scale accidental discharges of petroleum are an important cause of pollution along shorelines.
What are the main water pollution agents?
There are several classes of water pollutants. The first are disease-causing agents. These are bacteria, viruses, protozoa and parasitic worms that enter sewage systems and untreated waste. A second category of water pollutants is oxygen-demanding wastes; wastes that can be decomposed by oxygen-requiring bacteria.