Option a is the exact answer ...
<em>pls </em><em>mark</em><em> brainliest</em><em>.</em><em>.</em><em>.</em><em> </em><em>hope </em><em>it</em><em> helped</em><em> you</em><em>.</em><em>.</em><em>.</em><em> </em><em>:</em><em>)</em>
Velocity
momentum = mass times velocity
B) is the correct answer. The flu virus does not have the same genetic makeup each year as with each individual it infects its rapidly mutating.
that is has a nucleus and also a cell wall
