Answer:
Dobereiner's Law of Triads. Johann Wolfgang Dobereiner was a chemist in the early 1800s, when the periodic table wasn't in existence, and some chemists were trying to find a type of organizational system for the known elements.
Explanation:
The speed of something in a given direction
Answer: the correct answer is : too many fish caused an imbalance in the ecosystem, so the food web was affected.
Explanation: