What is the difference between rer and ser?

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

Gram-negative bacteria have a cell wall that is! and does not accept the stain, making itappear

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.