Which of the following can correlate rock formations?
1) different fossils
2) discontinuous layers
3) crosscuts
4) similar rock types

4) similar rock types

Explanation:

The correlation of rock forms can be done by comparative analysis during the process of relative dating. Relative dating is a process of determination of the relative order of the past event that could have occurred on earth. In this the age of object is determined by comparing it with other objects.

The formation of rock and it's respect time of formation can be determined by comparing the rock with the similar type of rocks.

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.