How effective has the Endangered Species Act been since it was enacted nearly 50 years ago?
which ones are the answers?

Asystem containing an ideal gas at a constant pressure of 1.22×10^5 pa gains 2140 j of heat. during the process, the internal energy of the system increases by 2320 j. what is the change in volume of the gas?

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

Explain why electric current cannot exist if a current doesn't have a voltage source.