QUES: Hectors nose is being invaded by bacteria and allergent

correct the punctuation.

CORRECTED: Hector's nose is being invaded by bacteria and allergent.

QUES: Like many other Japanese cities Osaka is a mixture of old and new where visitors are as likely to find the latest fashion trends as traditional kimonos

correct the punctuation.

CORRECTED: Like many other Japanese cities, Osaka is a mixture of old and new, where visitors are as likely to find the latest fashion trends as traditional kimonos.

QUES: Here you can see how small the domesticated animals of the period were compared to those of today

correct the punctuation.

CORRECTED:
Here you can see how small the domesticated animals of the period were compared to those of today.