Which formulas represent two polar molecules?
(1) co2 and hcl (3) h2o and hcl
(2) co2 and ch4 (4) h2o and ch4

Which statement about the stamps is correct?

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Which of the following are good traits of a hypothesis? it will be able to be testedit can predict an outcomeit will explain the observationsall of these