The earths crust is: :Thicker than others
:Mostly made of basalt and granite
:One big mass of rock called a plate
:Thinner at the poles

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg