942 hours (39 days).........................
Natural ResourcesZion volunteers working in the plant nursery<span>Air Quality Geologic Features and ProcessesPaleontological Resources North Fork Virgin River – Main Canyon Other Rivers and TributariesWild and Scenic River Plant CommunitiesWildlife Communities Special Status Species Ecosystem Processes and Land Status Dark Night Sky <span>Acoustic Environment
</span></span>
<span>metamorphic rocks are exposed at the Earth's surface following erosion and uplift from the temperatures and pressures that occur at great depths within the Earth's crust.</span>
