7-1
list 3 of 5 factors effecting climate
earths rotation
gases in atmosphere
solar energy
air/water movement patterns
earths surface features
describe why are greenhouse gases important
regulate earths tempreature
traps heat and keeps earth warm
describe biological extinction
no species member is left alive
How are species threatened
Habitat destruction
Invasive species
Pollution
Population growth
Overexploitation
Climate change
name the 3 major factors that affect circulation of air in lower atmosphere
uneven heating of earths surface
rotation of earth on its axis
properties of air/water/land
explain the rain shadow effect
wind blows in from ocean with moisture moist wind is pushed up and rained out on the windward side of the mountain
wind goes over mountain with moisture down the leeward side
what are 2 was biologists classify species and give examples
endangered (Sumatran tiger)
threatened (koala)
list 5 characteristics of endangered species
low fecundity
specialized niche
narrow distribution
feed at high trophic level
fixed migratory paterns
rare
commercially valued
large territory
describe albedo
percentage of incoming solar energy that a surface reflects
how does climate effect biomes
difference in temperature and average precipitation
what is the IUCN
International Union of Conservation of Nature
shows species as endangered/critically endangered/threatened
what is the best way to reduce threats from invasive species
research programs to identify them
pass treaties and laws
educate people and prevent
describe 2 things ocean currents are driven by
prevailing winds
earths rotation
what are the 4 main biomes
mountian
grassland
desert
forest
what is the greater threat to species
Habitat destruction
describe bioaccumulation
is the accumulation of toxins in animals of lower trophic levels
causes extinction of species not effected by pollution
list the 4 greenhouse gases
H20
CO2
CH4
N2O
what are 3 types of grasslands
tropical
temperate
arctic tundra
what is the normal background extinction rate
1/1 million
0.0001
how can we reduce extinction
having wildlife sanctuaries "habitat island"
enforcing laws and treaties
educate on measures to prevent harm