How do i say these statements in chinese? (google translate does not work)

Will give brainlist, population groups are different people who share similar weaknesses and struggles. sometimes people belong to more than one population group because they a) need several types of assistance 2)need to socialize with more people 3)don’t want to be left out ps this is career explorations

Metals are good conductors due to the presence of many

Difference between the angle of inciden