Answer:
Dependent variable: What you're measuring.
Independent variable: The variable the researcher is changing.
Controlled variable: The variable that is being used as an example that is not being experimented on. It is kept the same throughout the whole experiment.
Explanation:
It's C, the catalyst remains unchanged through a reaction.
It’s called mutation. This is because when nucleotide sequences are found within a subject and change the result of DNA it’s a phenomenon which is called mutation. Mutation can change in an organisms genetic make-up. It can be harmless helpful or maybe harmful.
Hope this helped :)
During the first phase of the menstrual cycle which is called the follicular phase, estrogen hormone will gradually increase causing the uterus lining to thicken. This thickening of uterine lining is preparation for possible implantation of embryo if fertilized egg travels safety to the uterus.
Hiya!
You can use the example of dogs and humans, Dogs give protection and companionship while humans give a home and food to the dog!
This is called Mutualism by the way! :D
Good-Luck!!
