Which of the following is a type of wave that does not need a medium though which to travel? equilibrium longitudinal amplitude transverse

What is the biggest country in south america?

Tides are caused by a differences in the gravitational force of the sun at different points on earth. differences in the gravitational force of the moon at different points on earth differences in earth’s gravitational field strength at different points on earth’s surfac fluctuations in the gravitational attraction between earth and the moon.

Modern democracies function as republics in which elected officials make decisions for the majority of the people.