Let p be the point between points s and t on st if st=21, sp=3b- 11 and pt=b+4, solve for b

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

In the developed world, women are increasingly more likely to delay childbirth until their mid- to late- twenties or long because

Based on current rates the earths human population is expected to grow how much by 2050