Question

please answer this question as fast as possible please ​

Answer 1

Answer:

a) The three R's – reduce, reuse and recycle – all help to cut down on the amount of waste we throw away. They conserve natural resources, landfill space and energy.

b) The reason that children need relatively more protein than adults is because of the protein requirement for growth. In order to maintain their tissues and organs, adults need to replace the protein that they inevitably breakdown or lose each day.

c) The human heart is an organ that pumps blood throughout the body via the circulatory system, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other wastes.