Awnsers are in question 3. For centuries, scientists accepted Ptolemy's view of the solar system,
which was that the Sun and planets orbit Earth. Which of the following
helped scientists gather data that caused this view to change?

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

the answer is a) a shiprock was formed by igneous process

the answer is 100% density i've answered this question before and done the quiz myself.