Solved Biology Abiotic and Biotic Factors Directions: Next | Chegg.com - Free Printable

Here is the completed worksheet with explanations for each item:

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Biology
Abiotic and Biotic Factors

Directions: Next to each item, place an A if it is an abiotic factor and a B if it is a biotic factor.

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1. B tree — *Trees are living organisms → biotic.*
2. A soil — *Soil is non-living matter (minerals, organic debris) → abiotic.*
3. A sunlight — *Energy from the sun; not alive → abiotic.*
4. B grass — *Living plant → biotic.*
5. B cow — *Living animal → biotic.*
6. A temperature — *Physical condition of the environment → abiotic.*
7. B fish — *Living animal → biotic.*
8. A water — *Non-living chemical substance → abiotic.*
9. B bird — *Living animal → biotic.*
10. A clouds — *Formed from water vapor; non-living → abiotic.*
11. A building — *Human-made structure; not alive → abiotic.*
12. B human — *Living organism → biotic.*
13. B cat — *Living animal → biotic.*
14. A paper — *Made from wood but processed; no longer living → abiotic.*
15. A rusty nail — *Inanimate object undergoing chemical change → abiotic.*
16. B algae — *Living photosynthetic organism → biotic.*
17. A rain — *Precipitation; non-living → abiotic.*
18. B spider — *Living arachnid → biotic.*
19. B shrubs — *Living plants → biotic.*
20. A clothing — *Manufactured item; not alive → abiotic.*

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✔ Final Answer Key:

1. B
2. A
3. A
4. B
5. B
6. A
7. B
8. A
9. B
10. A
11. A
12. B
13. B
14. A
15. A
16. B
17. A
18. B
19. B
20. A

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📌 Quick Recap:

- Biotic factors = Living things (plants, animals, fungi, bacteria, etc.)
- Abiotic factors = Non-living physical and chemical components (sunlight, water, temperature, soil, wind, rocks, man-made objects, etc.)

Even though some items like “paper” or “clothing” come from living sources, once processed and no longer alive, they are considered abiotic in ecology.

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