Given that our solar system is now about 4.6 billion years old, when will we need to start worrying about the sun running out of hydrogen for fusion?

What type of government does costa rica have?

Sandstones that form in aeolian (wind/desert) environments appear very different from other sandstones, such as those formed in a beach/ shoreline environment and in rivers on land. give three identifying properties for each of the three sandstones that would tell a geologist which depositional environment they formed in. consider things such as the relationship between transportation and grain size, shape, roundness, sorting, fossils and composition.

Find the equation of the line passing through the point (–1, 5) and perpendicular to the line 3x + y = 4.