What is true of the most recent ice age? O A. It made the dinosaurs extinct.
OB. The continents were much closer together than they are now.
O c. It occurred during the Mesozoic era.
O D. Sea levels were 300 feet lower than they are now.

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 correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

multiply it by 5 in order for you to understand i cant give an exact answer.