The answer u r looking for is- D, Nuclear Envelope. Hope I’ve helped ;)
The most likely answer is B, increased significantly. This is so, because of the vast amount of cars, and factories, still in use.So, based upon the statistics and the levels of pollution all over the world, I would have to answer B.
Answer:
Duplication of hox genes is important in the radiation of animals because they are regulating genes of symmetry and the body plan of the animals' bodies. Some change or mutation in these genes during duplication can cause mutations and with these evolution of the species as it controls the different segments of these animals as they develop, launching the genetic programs that form various body structures, such as limbs and organs. .
Auroras normally occur in the Earth's thermosphere.