A.some of the genetic material is altered
75km/hr due east
Explanation:
The velocity of the train will be 75km/hr due east.
- Velocity is given as the rate of change of displacement with time.
Velocity = 
- Velocity is a vector quantity that has both magnitude and directions.
- It is different from speed because it has the directional attribute.
- From the given data, we know that the train is moving at 75km per hour. This is the speed of the train.
- If we incorporate the direction then we have its velocity.
Learn more:
Velocity brainly.com/question/10962624
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The first box goes with why does the plant need energy..... and the second box goes with why is it important