Answer:
A purpose of a skin lab
Explanation:
to cut through the marketing
Answer:
B. Metamorphic
Explanation:
Metamorphic rock is combination of different rocks and builds off pre-existing rocks. This creates layers.
A is wrong.
B is right because that is their job.
C is wrong because that is the B-cells' role.
D is wrong.
The answers are following
1)a
2)a
3)d