A. Cell membrane would be the answer.
Answer:
Substrate. The substrate is the surface on which the river organisms live. It may be inorganic, consisting of geological material from the catchment area such as boulders, pebbles, gravel, sand or silt, or it may be organic, including fine particles, leaves, wood, moss and plants.
No because a cell’s dna can’t be changed. So it’s false
A term for softening of the brain is tephromalacia.