Match the following.
1. westward-flowing north and south

1.Northern Hemisphere currents

2. deflected equatorial currents

2.western boundary currents

3. generally counterclockwise

3.Southern Hemisphere currents

4. generally clockwise

4.equatorial currents

i'd say that the moon rock is about 2.2 billion years old.

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u