Which planet is made mostly of gases?

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only

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

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun