What are two environmental challenges that Texas faces in the 21st century? What are some of the proposed solutions to those challenges.

Idon't really understand the question. it counts for 20% of my lesson grade and i really need putting the answer into words. anything will . i need asap so im awarding 30 points.a disagreement between states of the united states concerning the rights of states vs. the authority of the national government led to the civil war. state governments were forced by war into a subservient position. what might happen if national governments ceded their authority to a world government by international treaty?

How was louis and clark expedition event unfolding and what was going on

What is the ancient chinese belief that god chooses the emperor?