Answer:
Different isotopes of an element generally have the same physical and chemical properties because they have the same numbers of protons and electrons.
The mass of ice is the same as water because during a physical change, like a state change, mass is conserved. When the ice melts, all that changes is the physical state.
Answer:
macro-evolution
Explanation:
This happens when evolution occurs because of separation of a population.
If ALL individuals of a species were not able to have offspring, then that species would eventually become extinct.
