Rock can be changed directly into rock with the application of heat and pressure. a. sedimentary, metamorphic b. sedimentary, igneous c. metamorphic, sedimentary d. igneous, sedimentary

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.

satellites are frequently used to make observations of the orbit on earth