A section of the periodic table is shown below: Which of the following elements has properties similar to B. r? A. s F K. r N. e (there's no periods in between for some reason I had to censor >:[ )

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

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration?

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)