Download Ecology Crossword

Science 10
Name: ___________________________
Block: __________
Ecology Review
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Ec lips eCros sword.c om
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The process by which harmful chemicals become more concentrated at higher trophic levels.
An organism which always feeds on producers must be a _____.
The process by which excess nutrients in aquatic ecosystems result in increased plant production and
decay.
Pacific salmon are considered to be a _____ species in the Great Bear Rainforest.
Bees pollinate flowers, helping them reproduce. Flowers supply the bees with food (nectar). This is an
example of _____.
Individuals with traits that give them a survival advantage are more likely to pass those traits onto their
offspring. (2 words, no space)
In some ecosystems, owls and hawks are in _____ for the same food source.
The _____ biome has no large trees due to the presence of permafrost.
The average conditions of temperature and precipitation over a long period of time.
Nonliving
Much of coastal BC is part of the _____ biome, which receives more than 200 cm of precipitation annually.
(2 words, no space)
An organism which performs photosynthesis.
Several populations interacting within the same ecosystem.
An organism which eats waste and dead things.
In a _____ biome, there are wide temperature swings between day and night, and very little precipitation.
Primary _____ starts with bare rock; no soil is present.
Most reductions in biodiversity are due to _____ destruction.
The amount of living material per square metre.
A living part of an ecosystem.
A _____ doesn't eat producers.
Himalayan blackberries are a(n) _____ in many BC ecosystems. (2 words, no space)
An organism which eats producers. (2 words, no space)
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Zebras and lions are characteristic of a _____ biome.
During _____, plants take carbon dioxide from the atmosphere and use it to produce carbohydrates.
A healthy ecosystem has high _____.
Penguins are uniquely adapted for survival in the _____ biome. (2 words, no space)
A _____ biome is characterized by trees that lose their leaves each autumn. (3 words, no spaces)
A biotic interaction in which one species benifits, and the other is neither helped nor harmed.
On land, most nitrogen fixation happens due to the activities of soil _____ around the roots of plants.
A group of individuals of the same species.
The _____ biome has the greatest biodiversity of any biome, but has very few large animals. (2 words,
no space)
The largest division of the biosphere, having characteristic plants, animals, and climate.
During _____, plants and animals return carbon dioxide to the atmosphere. (2 words, no space)
A _____ of a cactus is its thick, waxy coating to prevent water loss. (2 words, no space)
Moose and spruce trees are two species which inhabit the _____ biome. (2 words, no space)
Persistent organic pollutants, such as DDT, become more concentrated at higher _____. (2 words, no
space)
The gradual build-up of harmful substances in living organisms.
About 90% of _____ is lost as heat going from one trophic level to the next.
A graph which simultaneously shows average temperature and precipitation each month of the year for a
specific region.
_____ are important for ecosystems because they allow nutrients to be recycled.