Amodel of fossils formed on land, on the shore, and in water was set up in ms. bill's classroom. one of the students
commented that the model gave her the wrong idea about the types of fossils found in each location. why did the student make
that comment?

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture