The answer is D. Lymphatic
Skin isn't included in the lymphatic system.
Light is to sun bc the sun gives us light.
<span>The answer is the option D. It is false that most scientist do not use the metric system or SI. SI, the international system was adopted many years ago. It was an evolution of the metric system. In 1960 a commite of international scientists adopted it. Since then, the SI has spread widely and it is a must for the scientist to use it. </span>
The answer is 2000 calories per day. Hope this helps.