Agroup of scientists studied seismic waves and observed that the speed of seismic waves changes as they travel deeper into the earth. based on the scientists' observations, it can be concluded that earth may have layers made of the same materials empty caverns deep under earth's crust the same density throughout layers of different densities

How does central place theory explain patterns in the size and distribution of cities?

Which statements describe cultural influences? florida is bordered by water on three sides. french is spoken in parts of louisiana. forests are cleared to provide space for cattle grazing. male children are encouraged to attend the university. the longest river on the continent is located here. birthdays are celebrated on january 1st. per capita income of northern buckland is more than $100,000.

What is the radius of a circle whose equation is (x + 5)^2 + (y – 3)^2 = 42? 1. 2 units 2. 4 units 3 .8 units 4. 16 units