Space, environment, weather, population increase and decreas
Answer:
A scope built of two systems of lenses ... ==> Compound light microscope
Explanation:
Answer:
Proteins.
Explanation:
They are called membrane proteins.
Explanation:
The major blood vessels that are connected to the heart include the aorta, the superior vena cava, the inferior vena cava, the pulmonary artery (which takes oxygen-poor blood from the heart to the lungs, where it is oxygenated), the pulmonary veins (which bring oxygen-rich blood from the lungs to the heart) and the coronary arteries (which supply blood to the heart muscle).
