In anul 1992 in miscarea naturala a populatiei unei localitati, s-au inregistrat urmatoarele date : 769 de nascuti vii, 488 decedati iar populatia totala era de : 80328 persoane. Calculati : bilantul natural al populatiei in valori absolute si in promile.

All of the following statements about the biosphere are true except: a. light and heat from the sun do not affect the biosphere. b. the biosphere gets resources from earth's crust, hydrosphere and atmosphere. c. like "biology", the name for the biosphere comes from the greek word for life. d. the biosphere includes all living organisms on earth's surface.

Unlike other andean nations, chile has a relatively small population of mestizos people of european descent indians people of asian descent

Which layer surrounds the center of the earth? a: crust b: core c: mantle