<span>The phosphate enters the ecosystem and becomes tied up in the biogeochemical system where it is recycled. The rapid growth of aquatic vegetation and/or increase in the algal population can cause the death and decay of vegetation and aquatic life because of the decrease in dissolved oxygen levels.</span>
1. Which observation supported Wegener’s theory of continental drift?
<span>d. (The earth’s rotation could provide enough force to move the continents apart. )
</span>But this is not true. we know today that continents are present on the surface massive slabs called tectonic plates.
2. Which feature do you usually see when tectonic plates move apart?
b. <span>earthquakes
</span>
3. What happens in a convection cell?
b. Cold, dense material moves horizontally, while hot, less dense material moves vertically.
Rural settlement means people living in rural areas, that is, not in the cities (which are urban areas).
Less and less people live in rural areas because there are less jobs there than in the city as our farming becomes more and more industrialized - before more people had to work on the farm, as more things had to be done by hand.
<span>Cele mai mari acumulari de apa sunt calul alb, negreni , pe raul baseu mileanca pe paraul podriga catamarasti si dragasani pe raul sidna
ExistÄ douÄ categorii de lacuri:
Lacuri hidroenergetice:Lacul Stânca-Costești,pe Prut
Iazuri:cu frecvenČ›Ä mare:DracČ™ani,pe Jijia</span>
The four tools mapmaker use are:
Direction
Legend
Title
Diagram
