A piece of solid tin is submerged in silver nitrate solution. A reaction occurs, producing tin (iv) nitrate solution, and solid silver Write a word equation for the above reaction

Water molecules have a strong attraction to each other because of hydrogen bonding, allowing water to move against gravity up a plant's stem through capillary action. true false

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

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled