Advancement technology in enabled development of more powerful microscopes if thats what its asking you
Most of the liquid water on Earth is found in the oceans, in fact the percentage is so big that it comes as if almost all liquid water on our planet is in the oceans while the water from the lakes, rivers, ponds etc. is just a minor part of the whole.
The water from the oceans contains salt, thus making it a salty water and not suitable for drinking as it is naturally. For this water to be consumed and be part of the daily of the humans for drinking it needs to be desalinated. Desalination is a process that gets the salt out of the water and makes it suitable for drinking. This is not an unknown or untested process, it is something that is practiced for decades now mostly on the Arabian Peninsula where there isn't any fresh water resources.
The distribution of earthquakes outlines the boundaries of the earth's tectonic plates. The crust is broken up into slabs of rock called tectonic plates. There are seven major plates and many smaller ones. The boundaries of these plates, where they interact with each other is marked by earthquake activity. The plates diverge, converge or slide past each other at slow rates. The movement of the plates generates earthquakes.
Answer:
C. The greater an element's density, the smaller the amount of it found in the crust
Explanation:
The layering of the Earth happened because of the different densities of the elements from which it was made. The denser elements started to sink deeper, the elements with medium density occupied the central part, and the elements with the smallest density remained at the surface. This resulted in the formation of the three basic layers of the Earth, core, mantle and crust. The core is composed of the densest elements, the mantle of the ones with medium density, and the crust from the ones with smallest density.
Answer:
Scientists use waves to study the different layers of the earth. Usually, they use seismic waves, which are waves generated by earthquakes or nuclear-test explosions. So, scientists study the path and speed of these waves through the earth to decipher boundaries and the materials that make up the layers.
Explanation:
