What is the consetaration?

Which of the following lenses is a converging lens A double-convex lens B spherical-convex lens C plano-concave lens D convexo-concave lens? Is a beaker used to measure volume? What is the state of semi metals at room temperature? What are some paradigms from history that have been proven inaccurate? What is on the 6th grade 9 weeks test? What are the differences between metals and non metals? What philosophical movement uses the study of language and logic to solve problems and answer questions? What type of heat transfer does adding insulation slow down? What are materials that break easily? What is the density of 26.5 ml of a solution with a mass of 7.48 g? How do recycling centers work? What progressives shared a strong faith that what could improve society? How many milligrams of a medicine are un 3 tablets if 2 contain 10mg? What is scientific notation of 0.000075? What is the science behind saving spoiling strawberries? How big is 160cm in inches? What are the 6 secondary colors? How where humans invented? How long does take to grow salt crystals? According to the article A Warning As Science Catches Up On Cloning which artistic work was one of he first to tackle the idea of science overstepping its natural boundaries?