Trees
Trees that are used for making paper are called
pulpwood
_________ is a species of fish adapted to cold, running water in streams.
Trout
When one animal eats another it is called______
Predation
The yearly catch of fish from natural waters is ( increasing or decreasing)
Decreasing
The ____ of a fish absorb oxygen from the water.
Gills
The scientific management of forests is
Silviculture
Trees growing along streams help to _______
Regulate stream temperatures
When an organism lives on another organism, sharing its food, but not harming or killing the host is called________
Commensalism
The highest salinity levels are measured in
the oceans.
The ____ is where freshwater and seawater mix
Bay
The most important commercial species of trees in the united states is______
Douglas Fir
The Most important wildlife management area is the _______
Wetlands
When different wildlife species compete for the same resources it is called________
Competition
The accumulation of salts in water is caused by ________
Evaporation
Salmon must return to _____ water to spawn and complete their life cycles
Fresh
The yearly demand for wood products in the united states is about ____ Cubic feet.
19 billion
When two wildlife species live together for the benefit of both, the relationship is called_________
Mutualism
The ability of wildlife to enhance the beauty of their surroundings is called ______ Value
Asthetic
Both plants and animals are part of the food_____
Chain
_________ means the depth of visual perception
Turbidity
The air drying of lumber is reffered to as _______
Seasoning
The relationship between two organisms in which one feeds ofn the other without killing it is called________
Parasitism
The raising and selling of wildlife for hunting is an example of what type of relationship between humans and wildlife is called________
Commercial
Crawfish must _____, which means to break out of their shells.
Molt
________ water is located in tidal areas, and means fresh water and saltwater mixed.
Brackish