You didn't put any answer choices, but air and water are generally the greatest.
Answer:
Answer:
<h3>C. The organism's shape and size</h3>
This is a physical form of a fossil and can be seen by the eyes even in a glimps you can learn or differentiate it. Once you saw it you can exactly learn the fossil. The others needed a great nvestigation and research in order for them to be found.
18% of 400 is 72
Hope it helped
they might conserve water