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Extra Credit Crossword (Ch. 6, 7, 10)

Across
Biome that has deeper layers of soil called permafrost, and are frozen throughout the year
An increase in the amount of nutrients
Species that are not native to a particular region
The most threatened areas of high species diversity
Biome with the greatest amount of species diversity
Area of water located near the shore, aquatic life is diverse and abundant
This treaty was the first effective effort to stop the slaughter of African Elephants (poaching for ivory)
Refers to the weather conditions such as temperature, precipitation, humidity, and winds that occur in an area over a long period of time
Any form of genetic material, such as that contained within the reproductive, or germ cells of animals and plants
Down
Free-swimming organisms, such as fish and whales
Refers to all the different genes contained within all members of a population
Lowest layer of the tropical rainforest that receives the least amount of sunlight
Species that are native to and found only in one region
Species that are critical to the functioning of an ecosystem
Refers to the number of different species in a given area
A large region characterized by a specific type of climate and certain types of plants and animal communities
Distance north or south of the equator, measured in degrees
An area in which fresh water from a river mixes with salt water from the ocean
The height of an object above sea level (hint: think of a mountain)
Illegal hunting