B.latitude i belive this is the awnser
but i could be wrong sorry in advanced if i am
Answer:
2.5 mg
Explanation:
<em>The half-life of a substance is the time required for one half of the substance to decay. In order words, it is the time it will take for a substance to decay into half of its initial size.</em>
For a 20 mg element with a half-life of 30 which decays over a period of 90 years;
The first 30 years, 10 mg would have decayed, remaining 10 mg
The second 30 years, the remaining 10 mg would have decayed to 5 mg
The third 30 years, 5mg would have decayed to 2.5 mg.
Hence, in 90 years, 20 mg of the element would <u>remain only 2.5 mg.</u>
The strength training is an exercise, which increases the strength and the stamina of the muscles. It helps in reducing the anaerobic endurance, and hence, prevent the muscles from fatigue.
The strength training combined with aerobic exercises help in the increase in the muscle mass. It also decreases the adipose tissues present around the muscles, hence, help in acquiring extra fat free body.
So, the correct answer is :
A benefit of strength training, accentuated even more when combined with aerobic exercise, is a decrease in the adipose tissues around the muscles.
