A radio signal has a frequency of 1.023x10 hz if the speed of the signal in air is 2.997x10 m/s, what is the wavelength of the signal

Which of the following is the best definition of aerobic respiration? o a. the cellular process that releases energy by breaking down glucose o b. physical activity that involves the repeated motion of large muscle groups o c. physical activity that increases heart rate and breathing rate o d. the cellular process that converts solar energy to chemical energy

9. the history of life on earth is recorded in

What is any method of measuring the age of an object or event in years, such as using atomic half-life?