I personally think that it's C because all others r present......even D......because plants like climbers do curl around a tree trunk !!!
The building blocks of proteins are known as amino acids. These acids are not only the building blocks of proteins--they are also important in many other chemical and biological processes.
Answer: D
Explain:
For example, an unopened soda in a bottle has a uniform composition and is a homogeneous mixture. Once you open the bottle, bubbles appear in the liquid. The bubbles from carbonation are gasses, while the majority of the soda is liquid. An opened can of soda is an example of a heterogeneous mixture.
I think the answer you are looking for is calorie with a lowercase "c". However the substance should be water.