I need to answer and it’s due today so please help thank you

Describe some of the common health conditions associated with air pollution.

Which two levels of the spine that can undergo flexion and extension?

Insulin is a peptide therapeutic used to manage type 1 diabetes, which affects more than 20 million people worldwide according to the international diabetes federation. a significant limitation to the broad distribution and use of insulin to treat type 1 diabetes is the fact that it must be administered by injection rather than orally. why is insulin administered by injection and not orally?