Which of the following body system(s) (is) are involved in eliminating wastes? a. digestive only b. endocrine, urinary, and digestive c. integumentary, cardiovascular, digestive, and urinary d. urinary and digestive

What is called the "building block" of life?

Y’all i need answers plss people are saying me and my brother look alike although we’re two different ages. one year apart i’m a girl, btw i’m thinking we could be fraternal twins idk my parents and my friends think we look alike

The first signs of cellular differentiation occur in the blastocyst. why is cellular differentiation important for the development of a fully formed human infant?