How many cell divisions would it take to produce at least 1,000 cells from one cell

Hey me with this one❤❤❤❤ every organism needs food. does a cell also need it? explain very briefly.

In pea plants, the allele for inflated pod seed, i, is dominant over the allele for constricted pod seed, i. the punnett square shows a cross for this trait. which offspring will be homozygous dominant

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?