Why are elements not able to be broken down into simpler substances?

In a certain ecosystem owls are predators for mice. the owl population increases and they eat more mice this causes the mouse population to decrease what happens next? a.the birth of mice increases. b. the birth rate of owls increases c. the population of owls decreases d. the population of mice increases

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

Which label correctly identifies what x represents in the concept map?