Astudent hypothesizes that a goldfish will be more active in a bowl that has red gravel than in a bowl with grey gravel. to test this hypothesis, the student places on goldfish in a bowl with red gravel and another in a bowl with grey gravel. the color of the gravel is the blank variable in the experiment. a. control b. responding c. dependent d. independent need asap!

D. Independent

Explanation:

The independent variable is the variable which is used in an experimental setup. It can be changed or manipulated and even altered so as to determine it's effect over the dependent variable. The dependent variable changes due to the changes in the independent variable.

The color of the gravel is the independent variable. The effect of which is to be observed on the dependent variable that is the activeness of the goldfish.    

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).