Slate is a metamorphic rock that is formed from the sedimentary rock mudstone. Granulite is a metamorphic rock that is formed from the igneous rock basalt. Learn about sedimentary rocks, igneous rocks, other rocks and minerals or fossils. Make a fossil cast or check out our rock sorting lesson plan.
The definition of ongoing is something that is still going on at the present time and that is going to continue. An example of something that would be described as ongoing is an investigation that is still underway about a crime . YourDictionary definition and usage example.
Definition of meantime. : the time before something happens or before a specified period ends The new computers won't arrive until next week, but we can continue to use the old ones in the meantime.