What’s an isotope and what determines how they differ from one another in a single element?

the bullets go in this order.

4, 1, 3, 5, 2

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !

the answer is c.) there is a warm front in region a and a stationary front in region b.

d we did this already