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When grains move closer together, eliminating spaces, they have compacted.
When ANY two objects move closer together, the gravitational forces between them become greater.
It's stronger between objects with more mass, and between objects that are closer together.
3 times closer
A microscope should not be focused by moving the objectives and the slide closer together because it will affect the working distance. It is the optimal distance between objective lens and the upper surface of the slide.
When grains move closer together, eliminating spaces, they have compacted.
As you move them closer and closer together, the repellent force between them will get stronger and stronger.
When ANY two objects move closer together, the gravitational forces between them become greater.
Move the objects closer together.
they separate or become closer together
Bring them closer together.
the particles will move closer together
The closer together on the chromosome that genes are more likely that they will crossover together.
3 times closer
It's stronger between objects with more mass, and between objects that are closer together.
When their masses are greater, and when their centers of mass are closer together.
compacted