Pt. 1 Flashcards
Abiotic Factor
-A nonliving condition or thing that affects the ecosystem (climate or habitat)
Keystone species
-Species that has a disproportionate impact on community structure relative to its abundance
Asthenosphere
-Layer under the earths crust that is under the lithosphere and is it plastic/liquidy which allows the lithosphere crust to move
Biogenous Sediment
Particals of the oceans floor that made up from the shells or skeletons of past organisms
Homeotherm
Maintaining constant body temp in various environmental temperatures
Poikilotherm
Body temp is external and fluctuates with outside temperature
Endothermic
Majority of the body heat is derived from their own metabolism
Ectothermic
Majority or the body heat is derived from their outside environment (can not generate sufficient body heat through metabolism)
Abyssal plains are more abundant and expansive in the atlantic ocean when compared to the pacific ocean because…
Much of the coastlines in the pacific are active margins with trenches just offshore. trenches capture much of the sediment from the land before it reaches the deep ocean
oceanis crust is primarily made of _____ and is ______ than continental crust
Basalt
More dense
Current level of oxygen in the atmosphere is about 21%. Where did all of this oxygen come from?
The evolution and proliferation oh photosynthetic organisms increased oxygen in the atmosphere
Evidence of continental drift
Distribution of earthquakes
age of rocks from the seam floor
paleomagnetism
Upwelling
When deep warm water comes up to the surface, this creates a higher population due to more nutrients
Osmosis
This is when water can move across molecules and it goes from low to high concentration or solute
Surface tension
When the surface of the water tightens due to cohesion because the water molecules all stick together and become tightly packed. This allows the water to resist evaporation. also small organism can on the surface of the water
