3. Which of the following best describes this fossil: mold, cast, petrified, preserved, carbonized, or trace? I will be a shark tooth, My fossil's species is sharks, I think that it is petrified fossil, I kind of thought my fossil was also a body fossil. Is this right??

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?