Water? That’s my guess I mean it kinda makes sense Imao
Answer: A mutagen is a chemical compound or form of radiation that causes mutations, which of course means a change in the dna of a cell. So, your answer would be C) an environmental agent that changes DNA.
I'm not completely sure, but I'd say D.
PHANERITIC TEXTURE - Igneous rocks with large, visible crystals because the rock formed slowly in an underground magma chamber. PORPHYRITIC TEXTURE - an igneous rock in which PHENOCRYSTS (large crystals) are surrounded by a fine groundmass (very small crystals).
A. mass, volume.
Remember this:
A heart split in half: The top resembles an M while the bottom resembles a V
That's mass over volume
Hope this helps! <3