Answer:
Creo que es sudor
Explanation: No estoy seguro de no hablar español 99.9% posibilidad de que me equivoque (Usé google translate).
A thought that can and/or has been tested multiple times to prove it's true or false. And is used by others if prove true.
Answer:
"Which statements about this diagram are true? Check all that apply.
Layers 5 and 7 are the same age."
Addition**
Always layers in the same state and condition also position along the soil profile are the same age but may have different characters (soil catena) but the diagram is absent
Answer: B
because it explains more and it’s the correct one