Place these steps in order to describe the changes that occur in the organization of the chromosome as the cell progresses into mitosis.

a. the chromosome coils more and more tightly, forming supercoiled dna
b. condensed, replicated chromosomes attach at a pinched region called the centromere
c. dna is wrapped around histones at regular intervals, forming chromatin
d. interactions between parts of histones compact the dna

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

What noticeable trend from this graph might be used to make a conclusion?

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one