This is an image of an electrocardiogram Which statement describes the condition of the heart at the point indicated in the electrocardiogram? The muscles of the atria depolarize. The muscles of the ventricles depolarize. The muscles of the atria repolarize. The muscles of the ventricles repolarize.

Organisms within a population must compete for resources to survive

Tara sees a commercial for a brand of pills that promise to boost energy and people perform better in work and school. as people in the commercial talk about how much better they feel when taking the pill, tara notices a message on the bottom of the screen that reads, "this pill is not approved by doctors and has not been tested in controlled experiments." what is the best conclusion that tara should make about the commercial? it is making scientific claims based on subjective observations. it is making scientific claims based on opinions instead of pseudoscientific facts. it is making pseudoscientific claims based on objective observations. it is making pseudoscientific claims based on opinions instead of scientific facts.

The idea of spontaneous generation was disproved by in a experiment involving jars of meat