Answer:
I think it is
Natural disasters are a concern for human, life and property, but there is nothing we can do to predict them or prepare for them
It always starts with evaporation, because without water vapor (the byproduct of evaporation), there would be no clouds (they are made out of water vapor and some other particles). Henceforth, there will be no rain.
Answer:
The correct answer would be the slide should be almost in focus when changing to higher magnifications.
A parfocal lens is a type of lens which stays in focus when focal length or magnification is changed.
Parfocal microscopes are those in which objectives remain in focus even when magnification is changed for example, when it is switched from 10x to 40x, the object or slide remains at the focus.
