1. Describe how the density of zebras grazing on Panicum grasses changes over time. What characteristics of the zebra explain why zebra numbers are greatest when the grass is tallest and fullest?

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?