After a match has burned which of these is not proof that a chemical reaction occurred? a) smoke was formed b) heat was released c) some of the match stick did not burn d) the red chemical on the end of the matchstick is gone

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line

This punnett square shows the cross between two pants. one parent has round seeds (rr). and the other parent has wrinkled seeds (rr) which best describes their offspring as shown in this cross?

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?