Each person is someones grandparent, parent, spouse, child or friend. Of course, wear a mask at all times (at least a three-ply surgical mask). Again, make sure that you do not get together indoor with people, even your close friends. These measures are additive. I understand why people want to get together with their extended family and friends.
united states has had zero impact on the evolution of our species.
( z0 impact :ARG0 ( z1 country :name ( z2 name :op "United" :op "States" ) ) :ARG1 ( z3 evolve :ARG1 ( z4 species :poss ( z5 we ) ) ) :polarity - )
(z0 / impact-01
    :ARG0 (z1 / country
              :name (z2 / name
                        :op1 "United"
                        :op2 "States"))
    :ARG1 (z3 / evolve-01
              :ARG1 (z4 / species
                        :poss (z5 / we)))
    :polarity -)
united states has had zero impact on the evolution of our species .
z2 :op1 2
z1 :name z2
z2 :op2 1
z0 :polarity 0
z0 :ARG0 z1
z0 :ARG1 z3
z4 :poss z5
z3 :ARG1 z4