QUES: The biodegradability factor BIO shows how easily the substance is degraded in the environment

correct the punctuation.

CORRECTED: The biodegradability factor BIO shows how easily the substance is degraded in the environment.

QUES: About 70 of leaf N was redistributed to the ears in plants growing at adequate S supply compared with about 35 of leaf N in Sdeficient plants

correct the punctuation.

CORRECTED: About 70% of leaf N was redistributed to the ears in plants growing at adequate S supply compared with about 35% of leaf N in S-deficient plants.

QUES: Many people are attracted not only by the rich culture of Japan and its history but also the geographical location of Tokyo Part of the city is located on the mainland but some important administrative centers and areas are on the surrounding islands

correct the punctuation.

CORRECTED:
Many people are attracted not only by the rich culture of Japan and its history, but also the geographical location of Tokyo. Part of the city is located on the mainland, but some important administrative centers and areas are on the surrounding islands.