Use the diagram to answer the following question: What is the control variable in this experiment?
Effect of Hormone Treatment on Gene Transcription
Rate of gene transcription
mourt of produced
No homme Hommone A Momen Hamone B
Treatment
O Hormone A
O Hormone B
O Hormone A+B
Ο Ο
No hormone

humans are now responsible for causing changes in the environment that hurt animals and plant species. we take up more space on earth for our homes and cities. we pollute habitats. human activity often changes or destroys the habitats that plants and animals need to survive.

the index of refraction of the second medium is higher. i just took the test trust me !