How many years would it take to reach the sun without using modern tech

How do earth’s systems interact with each other?

Why does the blending of many different diciplines present both challenges and opportunities to enviromental scientist?

Which best explains why the number of states in the world increased significantly between 1985 and 1995? the map of southeast asia was redrawn, and new countries were formed. new states were formed when the soviet union collapsed. many african states received independence from their colonizers. communist countries seeking to spread their influence created new satellite states. civil wars in central america fueled the creation of new states.