Answer:
Explanation:
Many elements have one or more isotopes that are radioactive these are called radioisotopes their their nuclei are unstable so they break now or decay and emit radiation
Groundwater adds water to lakes, rivers, and oceans.
Answer:
The part of the skull surrounding the brain grew larger as hominins evolved
Answer:Do you have a photo available of the fossil? It’s fine if not!
Explanation:
