). which statement is true?
a this event is not mutually exclusive.
b this event is mutually exclusive
because there are different numbers
of each color.
this event is mutually exclusive
because a marble cannot be red and
black at the same time.

your answer is "the 1950's"

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

it’s lava came from an explosive eruption

i think the answer is a.keratin is the pigment responsible for skin color.