Which statement best illustrates a biotic or an abiotic factor that is often found in a city park? decaying leaves are an abiotic factor because they are not living. rocks are an abiotic factor because they have never been alive. water in ponds is a biotic factor, because it provides a habitat for living things. oxygen is a biotic factor, because it is required for life and found in all living things.

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.

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

What’s the student’s scientific question