A scientific investigation is replicable if A.
the same investigation is conducted in two different laboratories by two different scientists and the same results are produced.

B.
one scientist performs many different experiments in his or her own laboratory.

C.
two different scientists perform different experiments in their own laboratories but they produce the same results.

D.
one scientist performs the same experiment in his or her own laboratory and different results are obtained.

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? the wings are analogous structures that evolved differently and do not have a similar internal structure. the wings are homologous structures that evolved differently and do not have a similar internal structure. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. wings of bats are vestigial structures, but the wing structures of birds are not vestigial.

If there is another new infectious disease somewhere in the world, what do you think canadian officials should do

How does this procedure serve as a method of birth control?