<span>This principle, or thought process, is that in basic sports fitness programs, all athletes training to continuously improve must always work harder an harder as their bodies become more used to their existing work out routines.</span>
Answer:
a
Explanation:
because I have had this question
D oxygen there was no free oxygen on the earth
You see first the light wave because light travels faster than sound. Hope this helps
Answer:
Some minerals are needed in larger amounts than others, e.g. calcium, phosphorus, magnesium, sodium, potassium and chloride
