males only have one x chromosome (d)
in sex linked traits males always express it as they have x y chromosomes and can't cover up the trait whereas females have two x chromosomes and can cover up the trait
The statement about air pollution that is false is that "air pollution is only a problem in the developing world. Air pollution effects are reached across the globe.Air pollution comes from power plants, smog in big cities, cars, factories, and even volcanoes. Some air pollution can't be seen such as that from a swamp. A swamps methane gas contributes to the pollution. In the U.S, the EPA sets laws to help reduce the air pollution damage done by places like coal-run power plants.
<span>The correct answer is option D.An ecosystem consists of a population of organisms and its physical environment, and a population is made up of many different communities of organisms. An ecosystem is a bilogical system of populations and environment. And a population consists many communities and finally the communities are nade up of organisms.</span>
The answer is A because in the process of mitosis and meiosis chromosomes are single-stranded groups that are condensed to chromatin when the process of division of cells chromosomes replicate to make sure that the new daughter cells received the correct number of chromosomes