Which of the following is an example of a species changing over time.
choose all answers that are correct.

a.

a gardener notices a new kind of squash growing after he only planted seeds from his previous squash plants.

b.

a rabbit’s ears are bigger than a mouse’s ears.

c.

some weeds have become resistant to a chemical designed to kill them.

d.

the purple-spotted butterflies in your collection have more spots than the purple-spotted butterflies your grandfather collected when he was a child.

e.

a giraffe's neck is longer than a deer's neck.