Hurry !
heat from the sun hitting a solar panel.
a) radiation b) convection c) conduction

The answer for #3 is c but i don't know why

In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?

What is the main reason why some developing countries fear the increase the free trade policies around the world?