А is usually formed by a
group of representatives elected by the
people of a country,

Bicameral legislature.

Explanation:

The type of government in which legislators such as a senator and house of representative members are elected is known as a democracy. Democracy refers to a government of the people, by the people and for the people.

A bicameral legislature is usually formed by a group of representatives elected by the people of a country.

A bicameral legislature can be defined as a legislative body that comprises of two chambers or houses; upper house and lower house. The upper chamber or house consists of senators while the lower chamber consists of house of representatives. These legislators are elected by the people of the state they are representing and as such they must be an indigene of that particular state.

The primary function of these legislators is to make (enact) laws and that is why they're usually referred to as the legislative arm of government (legislature). In addition to making laws, legislators are saddled with the responsibility of confirming any appointment made by the president that requires consent and the ratification of treaties.

alliances in ww1 were different from ww2 because the entente in ww1 made up of serbia,russia,france,britan,japan and italy later america  and all allied in a sort of balance of power and too keep germany,austria-hungary,and the ottomans down. russia allied the serbians in order to exert its influence in the balkans while france allied the russians because france was still in dismay and insulted after the defeat to the germans during the unification of germany and britian allied the belgians after the germans invasion of belgium.in ww2 the alliances were in a preemptive attempt to deter any further wars into happening while germany and italy allied since they were insulted and humiliated after the previous war while also sharing a similar ideology of facsim along with japan which all 3 had a want for world domination and agreed to assist one another in the endevours 

explanation:

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.