To introduce elements that make up health-related physical fitness
Answer: C. <u>OXYGEN is needed, so the SLOW-twitched muscle fibers contract slowly.</u>
Explanation:
I'm just put it like this, for any exercise oxygen is the prime requirement for your muscles, so B and D are out, and if your moving BRISKLY, your muscles are moving faster but compared to running there moving SLOWER, so therefore, your answer is C.
Answer:
Re-emerging infectious diseases.
Explanation:
These types of diseases that were exterminated but now have came back are typed as 'Re-emerging diseases'. The diseases where once eradicated but now they have mutated and evolved to stronger strains. The diseases that were once controlled have now have had more reported cases and gaining popularity have 'emerged' once again into the world.
Due to parents not wanting to vaccinate their children from common diseases like polio and measles, this could become an epidemic.
The answer would be Bacteria