Explain why the level of greenhouse gasses in the atmosphere is rising.

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

Calculate the number of moles of ethane in 100 grams

Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n