Hiii im new to ...actually no im not i just made a new account

i kinda forgot how works so...i wanna change my username and i. d.k how

someone help me plz?

Astructural difference between the trachea and esophagus that prevents the trachea from collapsing is the presence of: a) smooth muscle b) skeletal muscle c) respiratory cilia d) rings of cartilage

Diagram the passage of food through the digestive system. label the organs involved in digestion and absorption and identify the sites where carbohydrates, proteins, and fats are digested.

Lordosis can often be prevented by strengthening core muscles in the abdominals and back. a. true b. false