<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>
Regent's Park, is trying to communicate the SCALE of the exotic animal by comparing it to the nine onlookers behind it. A scale is a unit used in mathematics.
<h3>What is a scale?</h3>
Scale is a characteristic of an object that does not change when it is multiplied by a given unit, thereby showing universality.
The units of scale in mathematics and physics include, among others, length and energy.
The value that is multiplied in a given scale is called 'common factor' and it is used to show universality.
Learn more about scales here:
brainly.com/question/25324744
The largest one, and answer is C. Sand
Different organisms moved in and out (notably, bacteria moved into a taxonomic kingdom of their own). ... In this system there are three main branches or "domains" of life: Bacteria, Archaea (both prokaryotic) and Eukarya (the eukaryotes). Within the eukaryotic domain, the protists are no longer a single group.
Live virus vaccines<span> use the weakened (attenuated) form of the virus. The measles,</span>mumps<span>, and </span>rubella<span> (</span>MMR<span>) vaccine and the </span>varicella<span> (chickenpox) vaccine are examples. Killed (inactivated) vaccines are made from a protein or other small pieces taken from a virus or bacteria. The </span>flu vaccine<span> is an example</span>