Answer: 3 and 4 are the answers.
Explanation: i took the quiz.
Answer:
Observation
-I smell onions
-My dog weighs 45 pounds
-It is 85 degrees outside today
Predictions
-My dog will bark at the vacuum cleaner
although he has never seen it before
-My mother is going to cook spaghetti for
supper next Tuesday
-It will be a long, hot summer
Explanation:
I think answer is
C. Something that can be observed or measured while changing the identity of the substance
It would be D.the food chain