What does an urn-shaped age pyramid represent?

Which one of these is a involving in both sexual and asexual reproduction

Dna is the genetic material that makes up living things, and folic acid plays an important role in the information of dna. jon wants to study the effect of folic acid on dna formation in microbes. which statement accurately describes the variables in this study

The organelle pictured is found in cells of and is theorized to have once been an independent organism.