Answer:
The half life of an isotope is the time that an element take to reduce the half of the mass.
Explanation:
So for example,in the case of carbon 14, one gram takes 5730 years to reduce to 0.5 g, and then, it takes another 5730 years to be reduced to 0.250 g and so and so.
So depending the mass of the sample that you have, for example, a bone that weights 15 g, it will take 5730 years to have a mass of 7.5 g, and then 11, 460 years to have a mass of 3.75 g, and then 17,190 years to have a mass of 1.875 g, and so, and so.
Hope this info is useful.
Answer: Education Quality
Literacy Rate: 99%
Literacy Rank: 45th
Homeschooling is legal
Adults have an average of 12.9 yrs of schooling
Enrollment rate for Primary Education: 91%
Levels of Education:
Primary: Ages 7-13 (Mandatory)
Middle School: Ages 13-16 (General Secondary Education)
Secondary: Ages 15-18
Technical Secondary: Ages 16-18 (Upper Level Secondary)
Tertiary: Ages: 18+ (University Level)
Explanation:
the national park of grand teton is a mountain and the national park of teide is a volcano
sorry if im wrong
Answer:
Grammatically speaking, sentences with present progressive tense have the following structure:
Pronoun + verb "estar" + auxiliary verb in gerund + complement
Here are two examples of sentences with present progressive tense:
La cangreja Juanita está comiendo lechuga.
Su dueño, don Andrés, está proporcionando la lechuga con cuidado.
