Why is it necessary to have regularly spaced gaps between sections of concrete sidewalk?

Sarah is sitting at the top of the slide in the schools playground. which will increase sarah’s kinetic energy a- an additional child is added to the top of the slide. b- sarah is pushed and moves down the slide. c- sarah climbs down the ladder and off the slide. d- the ladder is moved to the other side of the yard.

The activity of the modern sample is 1.10 bq . how long does that measurement take?

Gene expression is the activation of a gent that results in a question 1 options: protein dna mitochondria