7.1 Sources of Pollution Flashcards
why is mercury bad for people
bad for all systems of the body and can hinder development
how is mercury released into the environment
volcanic erruptions
rock weathering
burning trash
human activity is the biggest thing
explain the Biogeochemical sysem of mercury
so first the mercury is deposited through the human stuff volcanoes wtv
the mercurt is in a form of vapor which basically plops its way down into the land so like water and nutrients in the soil
so plants and bacteria and other stuff basically eat it all up and make methlymercury for other organisms to eat and accumulate in their tissues
so basically humans earth this up
biomagnification
the process by which a substance gets higher in accumulation as you climb the food chain
what organisms will have the most AMT of mercury and why
big fat predators bc of biomagnification
bioaccumulates
when a substance accumulates in the tissues of an organism
water pollution
any contamination of water that can harm wildlife or humans
why is wildlife affected by water pollution
causes their habitats to change
why are humans effected by water pollution
drinking water q
point source pollution
when pollution originates from one point that is identifiable
examples of point source pollution
drain pipes, sewer lines, specific factory, oil rig, etc.
nonpoint source pollution
when pollution is caused by accumulation from multiple areas
how many main types of pollution are there and what are they
2: point and nonpoint
examples of nonpoint source pollution
water runoff, irrigation, mining
what type of pollution is regulated
point pollution
bleaching + effects
when coral reefs go from WOW BAHH to white and gray bc of eutrophication usually bc of overfishing and bad which is bad for homeostasis and organisms that rely on coral reefs
oil spill + effects
when oil spills into water (aquatic pollution) and birds and other organisms cant do what they need to do to live anymore and some of the oil spills to the floor and kills organisms on the bottom
oceanic dead zone
zone of low oxygen areas in the water
what causes oceanic dead zone
eutrophicaiton bc of water pollution and tooo much runoff rom other things
where do humans ingest the most mercury from
eating fish
how are land organisms like birds affected by oil spills
they can eat it and die or it can destroy the insulating ability of their feathers
Which type of ecosystem is most likely to convert elemental mercury into its highly toxic organic forms?
aquatic bc aquatic bacteria usually do the changing into methylmercury
Which of the following best describes how increased sediment runoff impacts coral reef ecosystems?
Sediment blocks light from penetrating to photosynthetic coral.
Increased sediment runoff makes reef water cloudy and blocks light from reaching the coral.
