Answer:
The answer is D: Food webs are more complex than simple food chains.
Explanation:
A food chain follows one path of energy and materials between species. A food web is more complex and is a whole system of connected food chains. In a food web, organisms are placed into different trophic levels.
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Movement of particles from a region of a high concentration to a region of low concentration
Having closed toed shoes on. Wear your safety googles and gloves at all times. Follow the directions directly as they are on the board. Have your hair pulled back at all times. Do not wear droopy clothes into the lab.