It was developed by Alfred Wegener around 1912-1915 time frame. He proposed his theory of the "continental drift". He proposed that the continents plowed through crust of ocean basins. He said that the continents look like a puzzle piece to put together. It's very interesting.
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Answer:
It can be things like bleach, soap, or vinegar.
Explanation:
The dependant variable would be the salmon, because they depend on the water and pollution levels to give a result.
Short Answer: there are only 28 clown fish.
