QUES: It can however be ascertained by means of highpsychical sensory perception which means intuitively or cosmically

correct the punctuation.

CORRECTED: It can, however, be ascertained by means of high-psychical sensory perception, which means intuitively or cosmically.

QUES: Furthermore principles for calculation of product specific emissions in the first 100 years after deposit as well as principles for incorporation of land use as an environmental impact category

correct the punctuation.

CORRECTED: Furthermore, principles for calculation of product specific emissions in the first 100 years after deposit as well as principles for incorporation of land use as an environmental impact category.

QUES: But dark and desolate as the gloomy woods around him was his heart

correct the punctuation.

CORRECTED:
But dark and desolate as the gloomy woods around him was his heart.