ecology basics
what are biotic and abiotic factors
biotic are living, abiotic are nonliving
what is the largest fish in the sea
the whale shark
do you have to bring eye protection to wq?
yes
chemical formula of water
h2o
what is the deepest area of any ocean?
the mariana trench
mutualism, commensalism, and parasitism
mutualism: both species benefit
commensalism: one species benefits, the other has no effect
parasitism: one species benefits, the other is harmed
what sea animal can regenerate body parts?
starfish / brittle stars
what does a salinometer do?
measures the salinity (concentration of salt) in a solution
what nutrients cause eutrophication
nitrogen and phosphorus (in excess)
how much of earth's surface does the ocean cover?
71%
what is an estuary?
a water body where freshwater from lakes and rivers mixes with saltwater from the ocean
how many hearts do octopi have?
3
how much time do you have to complete the test?
50 minutes
pH of pure water
7
name the five principal oceans
antlantic, pacific, indian, arctic, southern (antarctic)
what is eutrophication?
excessive nutrients in a water body that leads to a lack of oxygen
what are benthic animals?
they dwell on the seafloor
what are the three study portions of wq?
general ecology, flora and fauna ID, water chemistry
how does acid rain affect pH of water bodies?
it lowers the pH (it becomes more acidic)
how much of the earth's oceans have we actually explored?
5%
name the five main greenhouse gases
carbon dioxide, methane, nitrous oxide, CFCs, water vapor
what is the study of fish called?
ichthyology
how is the scoring split up between five sections?
30% for each of the study portions, 5% for bringing the salinometer, 5% for an accurate prediction
what is turbidity in water?
how clear/cloudy the water is
what are the five ocean zones
sunlight, twilight, midnight, abyssal, hadal