Explanation:
Microscopy is the science of investigating small objects and structures using a microscope. ... Microscopic means being invisible to the eye unless aided by a microscope.
Answer:
micronucleus and macronucleus
1. Arteries : Carry's blood away from the heart.
2. Veins : Carry's blood back to the heart.
<span>
3. Capillaries : exchange of materials and gases between the cell and vessel takes place here.</span>