How did the Brazilian president decide to address the problems at the borders crossing? Group of answer choices

He increased the number of soldiers.

He decreased the number of soldiers.

He worked with Brazil to return refugees and close the border.

He called on Venezuelans to protect the immigrants and their belongings.

In a series of experiments, hershey and chase radioactively labeled dna and protein in viruses and then used labeled viruses to infect bacteria. hershey and chase's experiments definitively showed that a. dna and not protein is the genetic material. b. dna and protein work together as a cell's genetic material. c. protein and not dna is the genetic material. d. neither dna nor protein act as a cell's genetic material