An equinox is an occurrence that happens twice a year and is when the plane of the Earth's equator passes through the center of the Sun. During this, the hours of day and night are almost equal throughout this plane throughout the world.
<span> white blood cells tend to have a higher surface to volume ratio then other cells because the are more amorphous</span>
<span>The muscle at the end of the esophagus is not able to close, which allows stomach acid and digested food to go back up into the esophagus. </span>
'The endocrine system<span> is made up of glands that produce and secrete hormones, chemical substances produced in the body that regulate the activity of cells or organs. These hormones regulate the body's growth, metabolism (the physical and chemical processes of the body), and sexual development and </span>function' According to Google.
