Questions

Rio de Janeiro has been named as the World Capital of Architecture for 2020.

Random fluctuations in the gene frequencies within a population Eliminate is the one which best describes genetic drift.

We know that, elements in the same group of the periodic table have similar characteristics. Here magnesium and strontium are the same 2nd group elements and have same behavior. 

Therefore, strontium behaves same as magnesium. 

House of representatives has the power of impeachment in the office.

The law of conservation of mass states that in any closed system the mass of the system is neither created nor destroyed over time i.e, the mass cannot be changed overtime.

Hence, the given statement is true.

Polar lights (aurora polaris) are a natural phenomenon found in both the northern and southern hemispheres that can be truly awe inspiring.

Northern lights are also called by their scientific name, aurora borealis, and

Southern lights are called aurora australis.