Answer: B
Explanation: Plastic shopping bags don’t help the environment, meaning that its not an effort to help preserve the environment.
Hierarchy - I don’t think I have the full context of the question but the word fits the best of its biology related
Answer:
To show the flow of energy through ecosystems, food chains are sometimes drawn as energy pyramids. Each step of the pyramid represents a different trophic level, starting with primary producers at the bottom. The width of each step represents the rate of energy flow through each trophic level.
Explanation:
it allows for nutrients to come into the cell using passive tranport aka moving anything on a gradient without the use of energy (ATP).
