They are thread-like structures on the surfave of roots that absorb water and nutrients.
1) 25% (1/4 of the predictions are cc)
2) cc (both lowercase)
Answer:
Each subunit surrounds a central heme group that contains iron and binds one oxygen molecule, allowing each haemoglobin molecule to bind four oxygen molecules. Molecules with more oxygen bound to the heme groups are brighter red.
I hope I answer your question
thanks!
Not sure if you still need the answer but its number Three, they are the decomposers in many ecosystems
Respiratory system, because the lungs and diaphragm would get the oxygen from the air, and transfer them to the circulatory system (that's a pretty basic explanation, there's much more to it)