Which is one source that scientists use to reconstruct past climate conditions?

fossils frozen in glaciers
daily temperatures

the tilt of Earth's axis

running water

fossils frozen in glaciers.

Explanation:

Hope it helps.

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.

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck