Answer:
Oxygen to us, climate/weather patterns, and provides us with seafood
Explanation:
The answer would be B. The author was worried he/she might not enjoy camp.
He/She wasn't impatient because it said she "dreaded" it so that rules out A.
He/She wasn't welcoming the opportunity, because again, the word "dreaded" was used.
He/She wasn't excited because "dreaded" does not imply excitement.
Scientists did not know how traits were inherited.
