On a microscope how is the slide held steady so that it does not move while you look at the object

There is a liquid capsule inside a cup full of liquid. the cup full of liquid has salt in it and the liquid capsule has no salt in it. in which direction will the solvent flow? a. the salt does not have to move b. from the capsule to the larger cup c. equally between the capsule and the cup d. from the larger cup to the capsule

Individuals do not compete directly for resources, but are prey for the same predator

Which feature of a human community is similar to a niche in a biological community