I think the answer is D. A good indicator is the resting heart rate. Exercise strengthen your heart and it makes it more efficient. The resting heart rate shows of the heart is pumping blood normally each time it contracts. Having a normal resting heart rate would mean a healthy heart.
Answer:
The galaxies are moving away from Earth because the fabric of space itself is expanding. While galaxies themselves are on the move — the Andromeda Galaxy and the Milky Way, for example, are on a collision course — there is an overall phenomenon of redshift happening as the universe gets bigger.
Sorry someone flagged this
Answer:
Fog dispersal, artificial dissipation of fogs, usually by seeding or heating. ... It is done primarily at airports to improve visibility.
the nostrils catch the big dust particles while the small and escaped dust particles from nostrils stick to the mucous