Hat are the five food groups recommended by the usda’s myplate food guidance system?

Which step would a state health department most likely take to reduce lead exposure? promote health-planning operations to limit lead exposure at home.evaluate the number of countries affected by lead exposure.create general national guidelines for working with lead.carry out research on the worldwide effects of lead products.

Explain what causes the skin to burn in the sun? explain why people should avoid the sun if taking a photosensitive medication?

How could you find out if that advice is based in scientific evidence?