MCQ
The first artificial satellite _______ was sent to space by Soviet Union in 1957.
- AApollo
- BChandrayaan
- ✓Sputnik
- DLuna 2
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| Primary producers | Primary consumers | Secondary consumers | |
| $a.$ | green algae | fish | mosquito larvae |
| $b.$ | fish | green algae | mosquito larvae |
| $c.$ | mosquito larvae | fish | green algae |
| $d.$ | green algae | mosquito larvae | fish |