"Although" would be better.
Depends on how you are using it. You should start with even though. Or put even though in the middle
And is a coordinating conjunction; therefore it should never begin a sentence. Ironically, though, the preceding sentence is correct because and is used as a word, not as a conjunction.
yesAnother view"I don't think the first answer is correct. For example, in the sentence:Though it was very cold outside, she did not wear a coat.If the sentence were to be reworded though, then a comma would go after it.
It is possible, though it is not recommended in essays.
You can.
Yes, "Hiking" should start with a capital letter in a sentence because it is a proper noun.
Though she said to stop right now or Though she sis not know etc
Yep. There's no problem with using 'an' anywhere you want to. You shouldn't use and at the start of a sentence, though.
Yes. 'Thus' is another word for 'therefore'. Thus the sentence you start of with 'thus' should be an explanatory sentence.
Yes it should.
It should start with a topic sentence.
Radiation should not be capitalized unless it appears at the beginning of a sentence or is part of a proper noun, like "Radiation Therapy Unit."