Which statements are part of the safety protocol for this lab experiment? Check all that apply
Wear a lab coat and safety goggles when performing an experiment.
Always measure chemical quantities twice before adding to solution.
Use caution when connecting electric circuits.
Do not drop the magnets.
Do not use electrical currents.
Do not bring bar magnets near magnetic devices.
Always disconnect circuits when not in use.

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

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged

Select the correct answer a modure consists of glucose and water. what is the percent composition of glucose in the mixture if it contains 1.3 moles of glucose (cho total mass of the mature is 276 grams? ) and the a 1775