Answer: The molecules
Explanation:
A half-life describes the time it takes for half of the molecules to turn into a stable isotope
The country among the choices which has about 20 active volcanoes is the Philippines. The PHIVOLCS which is the Philippine national institution dedicated to studies on volcanoes have identified at least 23 volcanoes as active with 21 of them having historical eruptions.
The answer is.....b. the Black Sea
Answer:
Census
Explanation:
A census is the process of data collection and is the systematic acquisition of data about the given population.