a visible condensation of water droplets or ice crystals from the atmosphere, occurring by an aircraft.
Hint: It's a cloud or trail made by an Aircraft.
Contrail
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10 points
a predator at the top of a food chain that is not preyed upon by any other animal.
Apex Predator
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10 points
an animal that feeds on plants.
Herbivore
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5 points
an animal that naturally preys on others.
Predator
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25 points
the water on or surrounding the surface of the globe including water in the atmosphere.
Hydrosphere
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15 points
the number living organisms or crops that a region can support without environmental degradation.
Carrying Capacity
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20 points
an act, process, or art of fishing with a hook and line and usually a rod.
Angling
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25 points
a cloud of a class characterized by a formless layer that is almost uniformly dark gray; a rain cloud.
Nimbostratus
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15 points
the mass of eggs deposited by fishes, amphibians, mollusks, crustaceans, etc.
Spawning
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25 points
a cloud of a class indicative of thunderstorm conditions, characterized by large, dense towers.
Hint: Higher Level Cloud
Cumulonimbus
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5 points
creatures without a backbone.
Invertebrates
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15 points
a drainage system used to control flooding by temporarily storing flood waters.
Balanced Pond
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10 points
a fish that are less desirable to sport anglers within a limited region.
Undesirable Fish
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5 points
an animal that is hunted and killed by another for food.
Prey
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25 points
a cloud of a class characterized by a gray, horizontal layer with a uniform base.
Hint: Low Leveled Cloud