50+ Ecosystems worksheets for 3rd Class on Quizizz | Free & Printable - Free Printable

Let's go through each question one by one and solve them with explanations.

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1. Which of the following is an example of an interaction between a living and nonliving organism?

- A a worm using the soil as shelter
- B a bird using an insect for food
- C a snake using a mouse for food

✔ Correct Answer: A
Explanation:
- Living organisms include animals, plants, insects, etc.
- Nonliving components of an ecosystem include soil, water, air, sunlight, etc.
- In option A, the worm (living) interacts with soil (nonliving) for shelter — this is a living-nonliving interaction.
- Options B and C involve two living organisms (predator-prey relationships), so they are living-living interactions.

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2. Is fire a natural event that causes a change in the environment?

- A Yes
- B No

✔ Correct Answer: A
Explanation:
Fire can be a natural event, such as lightning-caused wildfires. These fires can change the environment by clearing vegetation, enriching soil with ash, and promoting new plant growth. So yes, it is a natural environmental change.

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3. Is a hurricane a natural event that causes a change in the environment?

- A yes
- B no

✔ Correct Answer: A
Explanation:
Hurricanes are natural weather events caused by atmospheric conditions. They cause major changes like flooding, erosion, destruction of habitats, and shifts in ecosystems. So, yes, they are natural events that change the environment.

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4. Is people cutting down trees a natural event that causes a change in the environment?

- A no
- B yes

✔ Correct Answer: A
Explanation:
Cutting down trees is a human activity, not a natural event. Natural events occur without human intervention (like storms or fires). While it does change the environment, it is not natural — it’s anthropogenic (caused by humans).

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5. Are floods a natural event that causes a change in the environment?

- A yes
- B no

✔ Correct Answer: A
Explanation:
Floods often occur naturally due to heavy rain, snowmelt, or storm surges. They can alter landscapes, deposit nutrients, and affect ecosystems. So yes, floods are natural events that cause environmental change.

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6. Is building roads a natural event that causes a change in the environment?

- A yes
- B no

✔ Correct Answer: B
Explanation:
Building roads is a human-made activity, not a natural process. It changes the environment (e.g., habitat fragmentation, pollution), but it is not natural. So the answer is no.

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7. A deer eats from Farmer McClard's cornfield. A flood destroyed the field of crops. What will happen to the deer now that the corn is destroyed?

- A The deer will leave the area to find food
- B None of the Above
- C The deer will plant more crops

✔ Correct Answer: A
Explanation:
Deer are animals that need food to survive. If their food source (corn) is destroyed, they will likely move to another area to find food. Deer cannot plant crops — that’s something only humans do. So, option A is the most logical outcome.

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8. To solve the flood hurting the cornfield, the community decided to build a grocery store in the field. Is this a good solution to the problem?

(Note: This question seems incomplete in the image, but we can infer based on context.)

- Likely options might be:
- A) Yes
- B) No
- C) Maybe

✔ Correct Answer: B (No)
Explanation:
Building a grocery store in a flooded field does not solve the flood problem. It actually makes the situation worse because:
- It destroys farmland.
- It doesn’t prevent future floods.
- It may increase runoff or urbanization, worsening flooding.
A better solution would be flood barriers, drainage systems, or relocating crops.

So, no, building a grocery store is not a good solution.

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✔ Final Answers Summary:

| Question | Answer |
|--------|--------|
| 1 | A |
| 2 | A |
| 3 | A |
| 4 | A |
| 5 | A |
| 6 | B |
| 7 | A |
| 8 | B (No) |

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