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.
Living for three or more years. Noun. A perennial plant. Asters, irises, and peonies are some examples of perennials. - First meant remaining leafy throughout the year; plants living three or more yearsâdying aboveground and sending up fresh growth every yearâare perennials.erennial. adjective continual, lasting, continuing, permanent, constant, enduring, chronic, persistent, abiding, lifelong, perpetual, recurrent, never-ending, incessant, unchanging, inveterate the perennial urban problems of drugs and homelessness. adjective.