Answer:
Examples of paradigm shifts are the movement of scientific theory from the Ptolemaic system (the earth at the centre of the universe) to the Copernican system (the sun at the centre of the universe), and the movement from Newtonian physics to the theory of relativity and to quantum physics.
Explanation:
Answer:
Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful. But under certain conditions, some organisms may cause disease.
Calcium is is used for strong bones and builds them
My physical activity is playing volley ball and doing chores
