Answer:
C
Explanation:
They are to decompose organic compounds into reusable organic compounds
If there weren't any primary consumers then the populations of producers would increase
Explanation:
As a diagnostic radiographer you'll use x-ray and ultrasound machines, as well as other forms of imaging technology, to look inside a patient's body and find out what's causing their illness. Working in a range of hospital departments, you'll acquire images to help with the diagnosis of illnesses and injuries.
I think the most involved would be your circular system because since your running fast you need to pump blood. Your muscular system because your moving a lot and your respiratory system because you need more oxygen