D
Some populations are related to others
The magnetosphere interacts with solar flares. It helps to redirect them. Otherwise, the Earth would be greatly heated and human life would become much harder to sustain, as homeostasis would require better cooling mechanisms.
Answer:
contains adenine-guanine pairs
Explanation:
The H zone completely disappear in a fully contracted sarcomere because THE SACROMERE SHORTEN AS THE Z LINE ARE PULLED CLOSER .
The Z lines which denotes the end of the sacromere are far apart at rest, in a contracted muscle they are drawn closer to one another while the H zone disappear.