Answer:
radiometric dating
Explanation:
Some minerals in rocks and organic matter for example bones and shells can contain radioactive isotopes. Any of parent and daughter isotopes in a sample can be measured and used to determine their age. This is known as radiometric dating.
three thirty
3:30
Pasamos,estudiamos,salimos,compramos,gastamos,comimos,gasto,salimos,regresamos,
The verbs need to be in past because the history was something that happened
pequeño
Las escuelas no son pequeño
9) Sirves
10) Pide
70–85 millones de personas
