hello myfriendz una pregunta la cerveza es una sustancia pura o una mezcla? me ayudan por favor! y si es una sustancia pura es un elemento o un compuesto, y si es mezcla homogénea o heterogénea? thanks ​

Rutherford's experiment indicated that matter was not as uniform as it appears what part of his experimental results implied this idea

When a comet collides with earth, it adds material to our planet and causes great damage. therefore, a collision like this is a a. destructive force b. constructive force c. geologic process and event d. constructive and destructive force

What’s the scientific notation for the number 6,840,000,000