If organisms gradually change over long periods of geological time, they represent . A. Extinction

B. Punctuated equilibrium

C. Gradualism

D. Stasis

2. Organisms suddenly change, new species often arise due to .

E. Stasis

F. Gradualism

G. Punctuated equilibrium

H. Extinction

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.

not sure if this what   you'r looking for would be percent composition