What makes a submarine dive? pumping air into its tanks to increase its density adding water to its tanks to increase its density pumping air into its tanks to decrease its density adding water to its tanks to decrease its density

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied. true or false

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

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.