I think its d, im not sure tho.
Answer:
a) orographic uplift and cooler temperature.
Explanation:
Answer: D
Explanation: The scientific method:
1. ask questions
2. do research
3 construct hypothesis
4 test with experiment
5 analyze results
6 take down data
:) stay vool
The answer is A, 4.6 billion years old. The solar system was obviously formed after the big bang, and using the big bang theory and the birth of our sun, projections show that our solar system is at most 4.6 billion years old.