A bacteriophage transfers a random fragment of DNA of the previous host to the current host. This is an example of

7th grade question (easy) look at the diagram of the food web. the arrows mean eaten by. what would happen if the number of snakes went down? answer choices are in the image.

In what for do plants utilize nitrogen? why do they need nitrogen?

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?