The best and most correct answer among the choices provided by the first question is the third choice or letter C "<span>Living things contain a vital force absent in nonliving things."
On the other hand, the </span>best and most correct answer among the choices provided by the second question is the first choice or letter A, the element oxygen was first discovered among all the choices.
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They can either lose or share electrons when they combine with other elements. So, depending on the conditions , these elements can behave as either metals, or non-metals. I hope my answer has come to your help. God bless and have a nice day ahead!
A control group is the group of people or things you, well control in your experiment. Say you were doing an experiment on the effectiveness of a vitamin, you would gather a group of people and for the sake of this assignment we'll say you have 10 people. You'd give 5 of the 10 people the actual vitamin and have them tell you how they feel and you'd give the other 5 a fake pill that looks like the vitamin that does nothing, and ask them how they feel after taking it. So, the people who actually took the real pill would be your control group because they actually tested the variable. I hope that helps you!
False, atomic mass is the weighted average mass of an atom of an element based on the relative natural abundance of that element's isotopes