Changes in position over time is motion, and the rate of change may be velocity or speed.
Changes in diversity over time.
Yes, friends do and will change over time. Every person changes over time.
How did the dirction of the moon change over time? How did the dirction of the moon change over time?
How has the brain progressed over time?
They fade over time
how the seismograph change over time
how the anemometer changed over time
No, electrons do not decay over time.
No, magnets do not expire over time.
No, photons do not decay over time.
how has coal mining changed over time
The meaning is to repeat over and over.