Confidence votes 2.6K. A composite volcano is built up from alternate layers of ash and lava. It has steep sides because when it erupts it lava is thick and viscous (andesitic) meaning that it does not travel great distances and stays on the side of the volcano. An example is Mount Vesuvius (which destroyed Pompeii).onfidence votes 2.6K. A composite volcano is built up from alternate layers of ash and lava. It has steep sides because when it erupts it lava is thick and viscous (andesitic) meaning that it does not travel great distances and stays on the side of the volcano. An example is Mount Vesuvius (which destroyed Pompeii).
Primavera (software) Primavera is an enterprise project portfolio management software. It includes project management, product management, collaboration and control capabilities and integrates with other enterprise software such as Oracle and SAPâs ERP systems. Primavera was launched in 1983 by Primavera Systems Inc. and was acquired by Oracle Corporation in 2008.
DNA primase is an enzyme involved in the replication of DNA and is a type of RNA polymerase. Primase catalyzes the synthesis of a short RNA (or DNA in some organisms ) segment called a primer complementary to a ssDNA template.