A student observes dark X-shaped structures in some onion root cells. Based on the observation, which process are these cells most likely performing? (A) photosynthesis
B mitosis
protein synthesis
meiosis

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.

the answer is c. it will give up it's valence electron to the other atom.