Answer:
Epithelial cells also line the inside of your throat, intestines, blood vessels, and all your organs. They are a barrier between the inside and outside of your body and are often the first place that is attacked by viruses as they begin their invasion deeper into the body.
Explanation:
Epithelial tissue covers the outside of the body and lines organs, vessels (blood and lymph), and cavities. Epithelial cells form the thin layer of cells known as the endothelium, which is contiguous with the inner tissue lining of organs such as the brain, lungs, skin, and heart.
Explanation:
leave is the base of the verb to leave left is the past simple and the past participle form of the verb it used in the pasta simple verb tense and the present perfect verb tense you learn how to use this structures in the lesson
Answer:
mouse thats immune to poison
Carbon pollution in the atmosphere means the ocean will become more acidic , harming marine life in the process