Liść spadł z drzewa w prost do rzeki. Po pięciu minutach, pokonując drogę 100m dopłynął do mostka. Jaka była średnia prędkość nurtu rzeki? Wynik podaj w km/h

What's the weather like where you live?

Volcanic irruption is most likely to be violent when a) volcanoes near to the sea b) the neck of the volcano is sealed by a plug c) the lava is viscous d) the lava reaches the surface through a fissure e) the volcano is on the ocean floor

Explore the ways that boundaries influence identity, interaction and exchange. things to consider: what is the race/ethnicity. how easy is it to interact/trade with others.