MCQ
The best source of energy in the environment is
- AWater
- BSoil
- ✓Trees
- DPonds
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| Trophic levels | Examples |
| $(A)$ First | $(a)$ Mon |
| $(B)$ Second | $(b)$ Wolf |
| $(C)$ Third | $(c)$ Cow |
| $(D)$ Fourth | $(d)$ Phytoplankton |