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

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?

When are the centromeres broken in meiosis?

Which atmospheric later is where earths northern and southern lights occur