Streak i think you may want to wait for a better answer.
Answer:
Existence itself is not homogeneous. It is heterogeneous. That means there are various kinds and degrees of purity.
Answer: Read explaination <3
Explanation:
Standing up in a boat is most likely to cause someone to fall overboard especially if someone starts to rock the boat or if a wave occurs and the person standing is not prepared of the said situations. You may also consider the causes standing on a slippery surface and slip off as well.
Answer:
At the boundary with the core.
Explanation:
The mantle is the second layer from the top. It is bordered by the lithosphere above it, or rather by the crust, and by the outer core below it. The mantle is a layer which is in viscous state, being mostly consisted of molten metals and rocks. The temperature of this layer is not the same all throughout it, but it varies a lot. The temperature at its top part is around 200 C degrees, while the temperature at its bottom is around 4,000 C degrees. There's two reasons for this. One is that the core is very hot, so it makes the bottom part of the mantle very hot as well, and the other one is that the lithosphere is much cooler, as well as constantly getting new, cold, crust in it, which makes its top part much cooler. The mantle is the layer responsible for the movement of the tectonic plates on the surface, as it is the layer where the convection currents occur and drive the plates' movement.
