<em><u>Answer:</u></em>
<em><u>Answer:the smallest packet of light energy is Proton</u></em>
4) digestive and circulatory, because the bladder is part of the digestive system. The circulatory system carries blood around the body using blood vessels.
Night vision because the creature will be able to hunt food in the night, having enhanced eye sight. To continue, light colored fur would make the creature stand out taking away cover and the other answers have no benefit to the scavenger.
Cytoplasm maintains the internal pressure in the cell.
The producers at the beginning of the Earth's food chain are plants.