The atmosphere protects us and what is on earth from the suns rays and also harmful radiation. It's kind of like a barrier between the sun's direct rays and earth. <span />
Answer is b. Hope it help
Answer:
Lithium has 3 protons, 4 neutrons, 3 electrons, and its mass is 6.941 u
Answer:
A double displacement reaction or double replacement reaction.
Explanation:
A neutral atom of potassium has 19 electrons.