when a person has heartburn acidic juices enter the esophagus and cause a burning sensation. where do these acidic juices come from?

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

Describe how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin

[34 points awarded to the best answer, use facts and/or data] 1.) what's the likelihood of thunderstorms occurring in the state of maryland? {this question is for a project for science, use facts and/or data and explain why . 34 points to the best answer]