The cells that result from meiosis have a haploid chromosome number
Renewable sources of energy do not contribute to global warming. Use of these resources rather helps in mitigating the global warming. A few example of these are hydroelectric power, wind generated power, solar energy, geothermal energy, tidal energy, biomass energy etc.
Your answer will be B.<span>a geneticist who studies the inheritance of traits in humans</span>
C however it is only a hypothesis that something of an extraterrestrial impact such asteroid or a comet or a massive bout of volcanism