The requirement of water is an essential requirement of a living being but the ways in modern life for drinking water by humans have directly affected the environment.
Use of plastic is hazardous to the environment as well as to the humans and other species as it is non-biodegradable and humans are unable to find any potential source to degrade it due to which it causes pollution. Even a tree is cut make paper which causes deforestation.
Thus, reusing the same drinking glass to drink water is one of the best ways to reduce the impact of plastic on the environment. So option B is the correct answer.
Crossing over occurs between prophase I and metaphase I and is the process where two homologous chromosome non-sister chromatids pair up with each other and exchange different segments of genetic material to form two recombinant chromosome sister chromatids.
