Answer: 3
Explanation:
All elements in group 3 have 3 levels of energy.
Na (sodium) has 3 valences the inner has 2 electrons, the middle has 8 electrons and the outer has 1 electron.
This will continue across the group 3 adding one more electron to the outer valence until Ar (argon).
Remember the Octet rule of 8..?
Answer:
the growth of the parts of plants with respect to the force of gravity. The upward growth of plant shoots is an instance of negative geotropism; the downward growth of roots is positive geotropism.
Explanation:
Both the Amy and Rosalie are correct.
<h3>
What is Circulatory system?</h3>
The heart, blood vessels, and blood itself circulate throughout the entire body of a human or other vertebrate through the blood circulatory system.
The blood contains of the red and white blood cells along with plasma and other substitutes of blood.
Also the blood has the function to supply the nutrients to the cells of the body along with transporting carbon dioxide to the alveoli of the lungs.
The circulatory system is a closed pack system with the involvement of various organs like the heart the lungs and plays a crucial role in maintaining the homeostasis of the body.
Learn more about circulatory system with the given link:
brainly.com/question/988206
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