Question

use the information to answer the question. charlie cannot believe this is a fish. it can breathe air and move on land. charlie thinks the northern snakehead fish will hurt the ecosystem where it lives. he reads that scientists are already collecting data. which data is most important to collect to see if the fish is hurting the ecosystem? choose two sets of data. a. the number of rivers in the ecosystem b. the number of people who fish in the ecosystem c. the number of snakehead fish eggs in the ecosystem d. the number of native fish in the ecosystem over time e. the number of snakehead fish in the ecosystem over time northern snakehead charlie finds more facts about the fish: it is an invasive species. one female snakehead can release about 75,000 eggs each year. no animals eat this fish. its only predators are people who catch fish.

Explanation:

Step1: Analyze the goal

The goal is to see if the snake - head fish is hurting the ecosystem.

Step2: Evaluate option A

The number of rivers in the ecosystem is not directly related to whether the snake - head fish is harming the ecosystem.

Step3: Evaluate option B

The number of people who fish in the ecosystem does not directly show the impact of the snake - head fish on the ecosystem.

Step4: Evaluate option C

The number of snake - head fish eggs only shows reproduction potential, not direct harm to the ecosystem.

Step5: Evaluate option D

Monitoring the number of native fish in the ecosystem over time can show if the snake - head fish is preying on them or competing for resources, which indicates harm to the ecosystem.

Step6: Evaluate option E

Monitoring the number of snake - head fish in the ecosystem over time can show if their population is growing out of control and causing damage to the ecosystem.

Answer:

D. the number of native fish in the ecosystem over time, E. the number of snakehead fish in the ecosystem over time