NEED HELP ASAP PLEASE WILL GIVE BRAINLIEST Each shape in the chart represents a different type of atom. Atoms with a line (stick) between them show a chemical bond. Cells A through D tell you whether or not a chemical bond occurs when the atoms combine. Use the drawing tool to fill in cells A through D in the chart. Show what will happen when the atoms or molecules combine. Use stick models as necessary.

15 points need quick 1. looking at your graph and the geologic time scale during what period did this rock form? what is the age span of the rock, in millions of years? 2. this rock sample is limestone and shale. with what you know about rock formation, what type of environment did these organisms live in? 3. if some of these fossil samples were found in a rock also containing leaf fossils, could you use radiocarbon dating to determine the age of this rock? explain.