It's simple, the answer is 'a'.
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How is he now?
I hope he’s better
Answer:
Energy
Explanation:
When we provide energy to an atom then electrons present in non-valence shell get excited and reach to higher energy level. ... Hence, we can conclude that energy can be added to an atom to cause a non-valence electron in the atom to temporarily become a valence electron.
Explanation:
One way teachers can honor cultural differences is by letting students from different cultures be the expert. Teaching other students about traditions, explaining the history and geography of countries and regions, and sharing cultural experiences are some ways to let these students know they are valued and welcome.