Unit 8

group of individuals of the same species living in the same area

community of organisms in an area and the physical factors in which they interact

emphasizes energy flow and chemical cycling between organisms and the environment

temperature precipitation sunlight and wind

sedimentary rocks, oceans, organisms

ATP, nucleic acids, phospholipids

weathering of rock, leaching into groundwater, uptake by plants

N2 to NH3 (plants take the nitrogen in)

less moisture because the clouds get stuck on the ocean side of the mountains

major life zones characterized by type of vegetation or physical environment

NH4 to NO2 and NO3 (this is done by soil bacteria) plants can then use the nitrates

rainy winters and dry summers, coastal regions

interior of continents, cold winters and hot summers, mid latitude

where light can penetrate into the water

sediment at the bottom of the pelagic zone

support the most fish and marine invertebrates

oxygen depleted, lots of algae body of water, no many animals

NO3 to N2 (from soil back into the atmosphere as a gas)

waste products are decomposed by microorganisms to make NH3

near the equator, seasonal precipitation, grasses and forbs, drought tolerant plants

movement of individuals or gametes away from their area of origin or center or high population density

depicts the alive population at each life cohort

ideal conditions, food is abundant, all individuals reproduce at capacity

maximum population size a particular environment can support given its abundance of limiting resources