I believe the answer is X chromosome and Y chromosome.
Answer:
I think it is the scientific method.
Explanation:
Sorry for that lack of info.
Engineers are trying to improve a race car. Their goal is to increase the acceleration of the car using the same engine. The change that shows the best application of Newton’s laws of motion to achieve this goal is - option D - decreasing the mass of the car.
When the mass of the car will be less, it will automatically accelerate to higher speed as lighter things move faster than heavier things.
