Answer:A: Composition
Explanation: While asteroids consist of metals and rocky material, comets are made up of ice, dust, rocky materials and organic compounds. When comets get closer to the Sun, they lose material with each orbit because some of their ice melts and vaporizes. Asteroids typically remain solid, even when near the Sun.
It is TRUE that each lung is fed oxygen by a separate bronchus.
Humans respire through the use of lungs. Each human being possess two lungs and each lung has its own bronchi. The bronchi serve as the path for the movement of air from the nose / mouth to the alveoli in the lungs. The alveoli are surrounded by blood vessels and the oxygen from the outside enter the blood through the thin capillary wall of the blood vessels while the carbon dioxide is released to the outside through the same medium.
Hi the organelle that contains enzymes that are necessary for intracellular digestion is called lysosome.
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