Which expenses is considered a fixed, discretionary expense

Arrange the following in order from the shortest wavelength to the longest wavelength. visible light gamma rays radio waves x-ray waves microwave infrared

Anew moon would be directly overhead at what time

Which of the following would most likely be a preservationist, as opposed to a conservationist, approach to public land management? i. allowing unrestricted boat access to a lake ii. allowing atv use in all areas of public land iii. closing fragile sections of a park to tourists i only ii only iii only i and iii ii and iii