Adjustment knobs are used to focus light in a light microscope
Well... a "build up in blood vessels" is actually called a CLOT. That should help you. :)
Plate tectonic theory can be made up of two things. The two things
that it is made of are all oceanic lithosphere or all continental
lithosphere.
Oxygen is a compound , phosphorus and nitrogen , and reservoirs
Answer:
B. interconnected
Explanation:
All the systems in our bodies (humans are indeed animals) are connected with each other to create a functional being. The blood flows throughout the body, providing nutrients; the bones support the structure and protect the heart and lungs. They work together.
Why not A: The systems are all completely necessary. There's nothing extraneous in our bodies, because extraneous stuff takes up energy, and our biology is incredibly economical.
Why not B: They're not interchangeable. How would you like your bones to turn to blood? Uh-huh.
Why not D: They interact with each other consistently, so they're not separate or segregated.
