Seasonal changes occur because of earth's tilt
Answer:
Xe
Explanation:
Cs and Na are solids in room temperature while F and Xe are gases.
The number of electrons in the outermost shell of an atom will determine its reactivity. Out of the gases given Xe and F, F ( the most electronegative element) posses 5 valence shell electrons which makes it highly reactive while Xe which is a noble gas posses 8 valence shell electrons which makes it less reactive compared to many elements.
Explanation:
A change of the form or nature of a thing or person into a completely different one, by natural or supernatural means.
A good way to reduce acid rain is use less fossil fuels, as they cause pollution which results in acid rain.
