This is what happens to sunlight when the water gets deeper
What is decreases?
100
Little is known about sea floor organisms because of this
What is depth?
100
This is the approximate estimate of the amount of freshwater on Earth
What is 4%?
100
This is the name of a stream of orders 1 through 3, that are usually cold, well-shaded, have limited productivity, and have insects who shred dead matter as dominant organisms
What is a headwater stream?
100
This is where riparian ecosystems are found
Where are land-waterway boundaries?
200
These are microscopic animals/juvenile forms of larger animals
What is zooplankton?
200
This is the base of the benthic food chain
What is detritus of phytoplankton, zooplankton, birds, and other marine life from shallower parts of the ocean?
200
This is where streams originate most of the time
What are high elevations and small tributaries?
200
This is the name of a stream of orders 4 through 6, with more exposure to sunlight, making it warmer, and is slower moving, so plant life can root and grow
What is a medium-sized creek?
200
Vegetation is quite different because of this
What is increased water availability?
300
This is a microscopic plant
What is phytoplankton?
300
These are what eats the detritus
What are bottom feeders?
300
Second-order streams are formed from what?
What are two first-order streams?
300
Streams of orders 6 and over are usually this
What is large and slow-moving?
300
Vegetation is different in riparian ecosystems from here
What are adjacent upland areas?
400
Phytoplankton and zooplankton exist near here
Where is the water surface?
400
These predators use bioluminescence to attract bottom feeders as food
What are high level predators?
400
This is the region of a river/stream where fish and other swimming organisms live
What are fast-moving portions?
400
Bottom-dwelling species populations increase when this also increases
What is sediment accumulation?
400
These ecosystems are important because of these
What are nutrient/energy cycles and wildlife habitats?
500
Phytoplankton and zooplankton get there nutrients from here
Where is directly from the sun?
500
This is the biochemical reaction or emission producing visible light by a living organism
What is bioluminescence?
500
The Amazon River is this order stream
What is 12-order?
500
Streams and rivers will eventually meet this and provide more sediment and some life
What is the ocean (open sea)?
500
Many animals, amphibians, reptiles, and mammals depend on this ecosystem