The writer wants to add information to the end of sentence 2 (reproduced below) to preview the line of reasoning in the passage. Unsurprisingly, neuroscientists warn that the constant use of smartphones alters the brain. Which version of the underlined portion of sentence 2 most effectively accomplishes this goal?.

Panthers and leopards prey on deer in an ecosystem. for unknown reasons, the population of leopards increased drastically. what are the likely effects of this change on the species? 1. more food for panthers and more competition for leopards 2. less food and more competition for panthers 3. fewer deer and more competition for panthers 4. more food for deer and less competition for panthers and leopards 5. more food for leopards and less competition for panthers

Give 2 examples of the sedimentation in the deep ocean?

What is the least amount of money a student will receive when participating in work study ? a. $10 an hour b. federal maximum wage c. federal minimum wage d. $6 an hour