A) Smelling algae B) Finding crayfish C) Hearing frogs D) Seeing fish
A) Fish trying to dislodge parasites B) Fish signaling to each other C) Fish getting ready to spawn D) Fish playing
A) Submerged rock B) Fish movement C) Wind gust D) Falling leaf
A) A spawning nest B) A deep pool of water C) A type of algae D) A large rock in the stream
A) Clean gravel B) Fine silt C) Organic muck D) Large boulders
A) Pollution B) A healthy food source for fish C) Low oxygen levels D) A lack of fish
A) Cover such as overhanging vegetation or rocks B) A straight, unobstructed channel C) A shallow, slow-moving current D) Completely open and sunlit areas
A) Footprints near the stream bank B) Bird activity around the stream C) An oily sheen on the water's surface D) Fecal matter near the edge of the stream
A) Lack of predators B) Lower water temperature C) Increased pollution D) Higher oxygen levels
A) Predator activity B) Natural shedding C) Spawning behavior D) Fish molting
A) Warm water, sunlight, fast currents B) Clean water, food, shelter C) Polluted water, no shelter, slow currents D) Muddy water, no food, open space
A) Overcrowding B) Successful reproduction and growth C) High pollution levels D) Lack of food
A) Dawn and dusk B) Midday C) Anytime equally D) Midnight
A) Clear and healthy water B) Too many plants C) Lack of oxygen D) Disturbance of the stream bed, possibly by fish
A) Robin B) Kingfisher C) Crow D) Sparrow
A) Holding in ambush B) Swimming in schools C) Grazing on algae D) Burying in the sand
A) A dry section B) A deep pool C) A calm area D) A fast-flowing section of the stream
A) Indicates camouflage B) Indicates they are ready to reproduce C) Indicates age D) Indicates sickness
A) A riffle with cobbles B) A concrete-lined channel C) An undercut bank with roots D) A pool with submerged logs
A) Fish are present B) Water is polluted C) Birds are feeding D) Fish are absent
A) Baby fish B) Adult fish C) Type of insect D) Stream algae
A) Reduced oxygen levels B) Fast-flowing currents for feeding C) Refuge from predators and temperature extremes D) Optimal spawning grounds
A) Concrete bank B) Bank with established vegetation C) Bank with bare soil D) Steep, eroding bank
A) Water Temperature B) Stream Velocity C) Sunlight Levels D) Dissolved Oxygen
A) Makes it harder for researchers to study B) Increases pollution C) Reduces stream flow D) Provides cover and feeding opportunities
A) Good water quality B) Pollution C) Low oxygen levels D) High fish population
A) A stagnant pool B) A shallow, fast-flowing area with turbulent water C) A deep, slow-moving area D) A dry streambed
A) Pebbles B) Silt C) Cobble D) Gravel
A) Leaves in the pools B) Algae covered rocks. C) Dry stream banks. D) Freshly disturbed gravel beds.
A) Releases toxins into the stream B) Provides shade and stabilizes banks C) Reduces oxygen levels D) Increases water temperature |