Answer:
<em>O</em><em>p</em><em>t</em><em>i</em><em>o</em><em>n</em><em> </em><em>c</em><em> </em><em>.</em><em> </em><em>s</em><em>i</em><em>m</em><em>i</em><em>l</em><em>a</em><em>r</em>
<em>p</em><em>l</em><em>e</em><em>a</em><em>s</em><em>e</em><em> </em><em>m</em><em>a</em><em>r</em><em>k</em><em>.</em><em>.</em><em>.</em>
<em>A</em><em>r</em><em>i</em><em>a</em><em>♡</em>
Answer:
D
Explanation:
Because every system in the body is vital
They both need nutrients to carry out life functions
There are four main types of tissue: muscle, epithelial, connective and nervous. Each is made of specialized cells that are grouped together according to structure and function. Muscle is found throughout the body and even includes organs such as the heart. Our outer layer of skin is epithelial tissue.
