Why do fronts tend to create precipitation? a. fronts have higher relative humidity than the surrounding air. b. along fronts, warm air rises, cools, and causes water to condense. c. the warm air draws moisture out of the cold air, which then falls as rain. d. when warm air and cold air mix, water droplets can form and fall as rain

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.

segmentation=endoskeleton=backbone=coelom=tissues