Answer:
This is true.
Explanation:
Robots can complete tasks at a much greater speed and efficiency than most humans and are based on machinery to operate, but some robotic machines do require some human maintenance or attention in order to function.
The correct answer is actually D), not A.
Although these are independent clauses indeed, the punctuation in A,B, and C is not correct.
Before 'however' there needs to be a semicolon (;). And after however, you have to put a comma. Therefore D is the correct answer.
After a comma there needs to be a pause in reading. Does A sound correct to you if you make a pause before 'however' and not after it? Of course not.
Answer: I would probably think the second to last option to be correct.
Answer:
The symbol for the element chromium according to the periodic table is Cr, symbol for the element krypton is Kr and symbol for the element osmium is Os.
<u>Explanation:
</u>
<em>Periodic table where the elements are arranged in a manner according to electronic configuration, atomic number and recurring chemical properties. </em><em>Chromium</em><em> is a 'transition metal' with atomic number 24 and it is </em><em>solid</em><em> in state at</em><em> room temperature</em>. <em>Krypton</em><em> is a 'noble gas' with atomic number 36 and it is </em><em>gaseous state at room temperature</em><em>.</em> <em>Osmium</em><em> is a 'transition metal' with atomic number 76 and it is </em><em>solid </em><em>in state at </em><em>room temperature</em><em>.</em> These symbols, atomic numbers and physical state of the above elements are said according to the periodic table.