Answer:
Because it was sand in the seawater sample
Explanation:
By the evaporation method you put the seawater in a boiler so that all the water evaporates from the jar, after that, as the salt is a heaver compound it doesn't evaporates and because of this you can weight the amount of salt that is left. If in the initial sample you also have sand this weight will interfier with the amount of salt that is cuantified when you weight it and because of this the salinity results will be incorrect.
That is true :) cattle ranching is the leading cause for deforestation in the Amazon rainforest
Answer:
flood well I think this is the answer
Answer:
Explanation:
Two landforms that can isolate and protect a civilization are mountain ranges and seas. Mountain ranges block invaders as they are hard to ascend and require invades to find a detour, thus prolonging the invasion. The sea is another barrier because the sea can be dangerous and so vast that people can get easily lost.
Hope that helps!