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.

Compare the composition of the moon's surface with the composition of the earth's surface.

The table presents the average day and night temperatures in five cities. it also reveals whether a city receives substantial rainfall (wet climate) or little rainfall (dry climate). which city’s rocks are likeliest to experience frost wedging, and why? a) city a because the consistently subzero temperature would prevent water from melting b) city b because it is a wet region and the temperature fluctuates around the freezing point c) city c because it receives plenty of rain fall and the weather is moderately cool d) city d because the hot and dry weather would cause rocks to absorb water

Select the correct answer from each drop-down menu. the lac operon in e. coli regulates genes that code for enzymes required for breakdown of lactose. the lac operon is operon that is activated in the presence of .