Answer:animals, birds, plants, fungi,
Explanation:
It helps us know the genetics of genes.
The digestive system contains all four major tissue types, epithelial<span>, connective, muscle and nervous. e</span>pithelial<span> tissue lines the entire length the digestive tract. it is made up of many different types of cells, including goblet cells that secrete mucus.</span>
Answer:
"The ciliary body is a circular structure that is an extension of the iris, the colored part of the eye."
Explanation:
