Question

HELP ASAP!! DUE TOMORROW!! WILL MARK AS BRAINLIEST!!

4. Which of the following sentences is a good hypothesis?
a. How does the human heart pump?
b. Goat milk tastes better than cow milk.
c. Geraniums are able to reproduce asexually.
d. Frogs on land are better off than frogs in the water.

5. How many manipulated variables does a controlled experiment have?
a. none
b. only 1
c. between 1 and 5
d. as many as needed

9. Which of the following models would be best for weather forecasting?
a. physical model
b. chemical model
c. conceptual model
d. mathematical model

Answer 1

I would say for the first question B because you are making an accusation that goat milk is better than cow milk.

The answer to the second question is B. Only one because you only want to test one thing per experiment. 

The answer to the third one is B. Chemical because weather is chemicals reacting. 

Answer 2

4. D
5. B only one, because adding more would make it difficult to get one conclusion.
9. D