conversión del vapor de agua en lluvia, es un cambio físico o cambio químico y por qué / conversion of water vapor into rain, is it a physical change or chemical change and why​

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?

Most of the phosphorus on earth comes from ?

If you’re experiencing conflict with a friend or family member the first step you should take is to