Question
What do you mean by unicellular and multicellular?
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A car is moving on a straight road with uniform acceleration. The speed of the car varies with time as follows:
| Time (s) | 0 | 2 | 4 | 6 | 8 | 10 |
| Speed (m/s) | 4 | 8 | 12 | 16 | 20 | 24 |
Draw the speed-time graph by choosing a convenient scale. From this graph:
List main sources of water pollution.
Give one point of difference between notochord and nerve cord.