Type your response in the box. Watch this video about the stresses on the body caused by carrying heavy backpacks. Then design an investigation about the effect of carrying backpacks on students’ health using these steps of the scientific method:

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

it's d - life cycles - apex