There used to be solid land and then something happened and a lake or just a body of water formed over it or was made over it
Answer:
here v
Explanation:
you study things over a period of time, use quizlet for biology, use flashcards, have family or friends quiz you, and study notes
Answer:
Air passage constrict and allow less air into the lungs.
The isotope has a half-life of 5730 years.
In 5730 years, the isotope (Carbon-14, to be more exact) will lose 50% of its mass, meaning that in 11460 years, 25 grams of Carbon-14 will remain.