Name three human systems vulnerable to chemical effects. Then, for each of the three systems, provide two examples of harm to humans and the chemicals that cause the harm.
What will be an ideal response?
The three systems are the endocrine, nervous, and immune.Endocrine = DDT, mercury and PCB's can cause reproductive problems and lower sperm count.Nervous = PCB's and lead can cause learning disabilities and retardation.Immune = Mercury can cause susceptibility to bacterial infections. Dioxins can cause breast cancer.
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The element _______________is said to be a safer radioactive element that could be used in newer nuclear power plant reactors
Fill in the blanks with correct word
Why is coal slurry a problem?
What will be an ideal response?
Hydrocarbon emissions are produced mainly by cement manufacturing industries.
Answer the following statement true (T) or false (F)
A dead zone refers to
A) terrestrial areas in which excessive nitrogen fertilizer has essentially burned the soil, preventing plants and microorganisms from living there. B) an ecosystem that was cleared of all vegetation for slash and burn agriculture. C) hypoxic areas in water bodies that limit marine and aquatic life. D) oligotrophic areas in water bodies that cannot support life due to lack of nutrients.