The answer is that <span>all
veins carry blood back to the heart, except for the pulmonary vein. the
vena cava empty into the right side of the heart, so they technically
bring blood to the
</span>main atrium.
Answer:
Positive and negative ions
Explanation:
when these two come together it is considered ionic bonding.
Answer: Second option is correct.
Explanation:
Valley and mountain breezes are examples of local winds.
It occurs one by one on a regular cycle.
Valley and mountain breezes is similar to sea and land breezes.
Hence, second option is correct.