How these concepts are used in different situation

Of the 168 hours in a week as a full time student you should spend how many hours per week on school work?

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

To safely control the traffic flow and protect workers near public roadways and moving construction equipment use you could use