Some flatworms reproduce through fragmentation. What is a disadvantage of this method

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Iwill make you brainliest pleeze answer this fast i have to turn it in really soon brainliest promise easy question 6th grade ! a weather map shows a high pressure system with circles around it. what does this mean? a) an occluded front b) areas of equal altitude c) areas of equal pressure d) a stationary front