You and your friend want to see how changing the type of liquid (e. g. water, milk, orange juice) given to a plant affects how high it grows. What would be the independent variable in this experiment? SELECT AN ANSWER

1)the type of plant used

2)the temperature of the air

3)the type of liquid

4)the height of the plant

Agene with the original sequence of atgtt—tact underwent substitution mutation to form atatt—tact after a few generations. tact is a part of a muscle protein encoding region, and atgtt codes for a digestive enzyme. what will be the effect of this mutation? a. the production of muscle protein will be affected. b. the production of digestive enzymes will be affected. c. the production of both the protein and the enzyme will be affected. d. the production of neither the protein nor the enzyme will be affected.

Explain how organisms could be harmed by high levels of salt from roadways?

Which description provides the best objective summary of the article in the passage?