Answer:
The chemical feature of each group is: native elements – only one element; silicates – silica tetrahedron; phosphates – phosphate tetrahedron; carbonates – one carbon atom with three oxygen atoms; halides – a halogen bonded with a metallic atom; oxides – a metal combined with oxygen; sulfates – sulfur and oxygen
A group of tissues working together is an organ.
ANSWER:
A. an organ
Answer:
I believe the answer is B.
Explanation:
Hope my answer has helped you and if not i am sorry.