Which statements describe the importance of the nitrogen cycle to living things? Check all that apply.

A. It provides a source of water.
B. It helps cells make proteins.
C. It provides a form of usable nitrogen.
D. It removes carbon dioxide from the atmosphere.
E. It destroys harmful bacteria.
F .It helps cells make glucose.

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.

you should wear a lead protective shield when having teeth x-rays

hope i

-lavira : )