Unlike the cell memebrane, the cell wall is a)found in all organisms, b)composed of a lipid bilayer c)a flexiable barrier d)usually made of tough fibers.

Coral reefs support more species per unit area than any other marine environment on earth. what is one way coral reefs are important to the health of the biosphere

Name the organs of humanelemintary canal.

In the practice of science, this type of reasoning is used to develop explanations.