Answer: I believe it is D, the Nervous System.
Explanation:
Answer:
deoxygenated blood i think
Explanation:
Hey there!
I believe the answer you're looking for is radio wave
Hope this helps!
Answer:
Red blood cells transport oxygen around the body. They are specialised to carry oxygen because they: contain large quantities of a protein called haemoglobin , which can bind oxygen. don't have a nucleus, so there is more room for haemoglobin.
Explanation:
Answer:
A
Explanation:
B can be supported with surveying people,
C can be supported by inspecting Grass under a microscope
