If its a heart its circulatory, lungs respiratory, kidneys excretory, brain nervous, stomach digestive, hormones endocrine, skin integumentary, lymph nodes lymphatic, bone skeletal, muscle muscular, thymus immune system.
But if you can show a pic i could try to answer it more specifically.
Answer:
uh a
Explanation:
don't understand question
The question is asking to state the substance that come from the outside in the process of photosynthesis, base on my research and further investigation, I would say that its the heat or light energy. I hope you are satisfied with my answer and feel free to ask for more
Answer: Shared Electrons
Explanation:
It happens between atoms.