What is at the center of our galaxy?

Which image shows labeled organelles that are present only in plant cells?

An example of internal feedback working to maintain homeostasis is your a. decreased respiration rate when you are studying b. decreased heart rate when you are sad c. increased respiration rate when your muscles need more oxygen d. increased heart rate when your lungs need more oxygen

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