I think the answer is B lil bruh
Answer: 37.2 trillion cells
<span>The answer is tissue. Tissue is a group made up of specialized cells that are formed together according to each other's structure and function. There are fourn known types of tissue, such as the muscle, epithelial, connective and nervous tissues.</span>
Option C. Organisms were probably more complex during past eras.
Galaxy is a collection of stars, gas, and dust bound together by gravity. The smallest galaxies may contain only a few hundred thousand stars, while the largest galaxies have thousands of billions of stars.