What is 56+2 minus 8 times 23?

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

Scientists observed a rock stratum with fossil. if mollusks evolved before arthropod, where will their fossils be found.

Igot a 80% on my final to os ya take these points in return