species that indicate or provide a sign of the ecosystem's quality
to process by which a body of water becomes enriched in dissolved nutrients that stimulate the growth of aquatic plant life --> depletion of dissolved oxygen
the way that pollutants move throughout an ecosystem (i.e predator eating prey that contains a pollutant, dolphins and mercury)
practice in which natural resources are used and managed in a way that meets the current needs without hurting future generations (i.e global fisheries)
A surrogate species selected with the assumption that protection of its habitat will serve as an "umbrella" to protect many other species; often a species with large or specialized habitat requirements or which is easy to count.
what is smog?
type of air pollution caused by sunlight interacting with pollutants made by fossil fuel emmisions
what is ground level ozone?
NO2 produced in fossil fuel combustions reacts with O2 to create O3 (ozone) --> causes asthma, emphysema
what is acid rain?
produced when pollutants in the water cycle cause pH to drop below normal levels
explain the greenhouse effect
earths atmosphere traps solar radiation --> caused by presence of gases (co2, H20, vapor) --> allow incoming light to pass through but absorb heat radiated back from the earth's surface
give examples of evidence of climate change
sea levels rising, global temperature rising, icecaps melting, flowers blooming earlier, animals migrating later
the fraction of the total sunlight striking a surface that gets reflected from that surface (albedo that is high, near 1, is very bright)
A produces more B, which produces more A
A produces B, which stops or lowers the production of A
what is the purpose of negative feedback?
to maintain stability (homeostasis)
what are the storage polysacharides in animals?
what are the storage polysaccharides in plants?
what are the structural polysacharides in plants>
what are the structural polysacharides in animals?
take out water to join two sugar molecules, makes it bigger