For the first one, electrons travel around the nucleus in fixed energy levels with varying energies.
Second one, protons, neutrons, and electrons have a mass, but electrons have far less mass
Third one, cations and protons
Fourth, not sure.
Because the way our solar system works it only happens either yearly or just depends on the situations
The correct answer is - True.
The matter is moved through the Earth by the interactions that appear between the Earth's systems. The lithosphere, hydrosphere, biosphere, cryosphere, and atmosphere, are constantly interacting between each other. Those interactions cause lot of matter to move around the Earth, both on its surface and inside of it.
The plate tectonics movement manages to move pretty much all of the matter on the planet, though it is a very slow process, it is very important one. The atmosphere with the movement of the air masses, as well as the waters from the hydrosphere, and the ice of the cryosphere, all manage to to move around lot of matter with their force, and that can be very slowly and on small distance, or quickly and on longer distances. The biosphere too, even though it contributes the least int he movement of matter, contributes to the physical movement of smaller amounts of matter from one place to another.
The correct answer is Separating soils by grain size. Among all the other choices, this is the aspect of soil characteristics in which a soil triangle is used for. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
