In an insect .
A) the blood vessels do not form a continuous circuit
B) nutrients are circulated through an open circulatory system.
C) the circulatory system is responsible for exchange of respiratory gases
D) the fluid flowing through the heart is the same fluid that bathes the tissues.

What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.