Who was the first scientist to dispute ptolemy's model of a geocentric orbit earth science universe?

What is the area of the triangle? 2 3 6

Describe the formation of auroras and explain why they can only be seen at high latitudes.

Rebecca is loading medical supply boxes into a crate. each supply box is 1.5 feet tall, 1 foot wide, and 2 feet deep. the crate is 9 feet high, 10 feet wide, and 10 feet deep. what is the maximum number of supply boxes can she pack in this crate?

The ozone layer that protects Earth from the Sun's harmful rays exists in the stratosphere. true or false

Eventos biológicos e geológicos da terra

Lines of latitude and longitude form a pattern called a

Why is Bristol an important international city

Why are environmental issues a major concern for people of Sub-Saharan Africa?

Which revelation resulted from the observation of the spectrum of different galaxies? A. there were more galaxies whose spectrum was blueshifted B. there were no galaxies whose spectrum was redshifted C.

Why are people are able to live in deserts, mountains, and tundras?