What would happen to the ecosystem in the terrarium if it were a closed system for energy

Which of the following are false concerning microbes? a. microbes generate oxygen through photosynthesis.b. the primary role of microbes on the planet involves causing disease in animals and humans.c. microbes produce vitamins in the intestines.d. microbes play a role in breaking down waste and decomposing dead organisms.

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

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