Answer:
A
Explanation:
Because there are two DNA strands in the DNA molecule and they both rotate around each other in a helix formation. So two helixes = double helix.
Sanderson's cross-national study indicated that international migration increases overall levels of human development. Thus, the correct option is A.
<h3>What is Migration?</h3>
Migration may be defined as the movement of people from one place to another in search of resources better than their native one.
International migration increases the overall standards of human development because it initiates new opportunities and trade aspects of people of one country to another.
It also leads to improved human development outcomes in major areas like education, health, and finance.
Therefore, the correct option for this question is A.
To learn more about International migration, refer to the link:
brainly.com/question/25198210
#SPJ1
Glucose is the main provider of energy for the brain and the nervous system. Because the brain is so rich in nerve cells, or neurons, it is the most energy demanding organ, using one half of all the sugar energy in the body. Brain functions such as memory, thinking and learning are closely linked to glucose levels and how efficiently the brain uses this fuel source.
Yes that is the correct answer choice
