37.14 + 37.18 Energy, Chemical, and Biogeochemical Cycles + Abiotic Reservoirs Flashcards
What is also cycled with Energy flow and Chemical Cycling
Nutrients
What kind of organisms do energy flow and chemical cycling ignore
chemosynthetic organisms
What does energy start with
the sun
Energy is always lost to ____ during cycling
heat
Heat
random motion of particles, which is the lowest form of energy and the most random
Can something be 100% efficient
No bc friction causes heat, which causes you to lose enegry bc it “goes away”
What are the four nutrients that are cycled
Water, nitrogen, phosphorous, and carbon
How many directions do energy cycles go in
1
Biogeochemical cycles
any of the various chemical cycles that involve both biotic and abiotic components of an ecosystem
What is the main source of energy of any biogeochemical cycle
the sun
How do chemical elements cycle
as organisms acquire nutrients, release waste, die, decompose, etc.
How many parts do biogeochemical cycles usually have?
4
What are the 4 steps that biogeochemical cycles usually have?
1) Producers incorporate chemicals from the abiotic reservoirs into organic compounds
2) Consumers feed on the producers, incorporating some of the chemicals into their bodies
3) Both producers and consumers release some chemicals back into the environment in the form of waste products
4) Decomposers break down complex organic molecules in detritus
Geologic processes such as erosion ,weathering of rocks, etc. also produce
chemicals
Abiotic Reservoirs
the part of an ecosystem where a chemical (such as carbon or nitrogen) accumulates outside of living organisms