Natural selection acts on the distribution of traits. When graphed, natural selection shifts the graph away (new population) from its original shape (original population). The original graph that serves as a baseline for the shifts in traits caused by natural selection is referred to as what type of distribution and is represented by what type of curve? a.) Normal distribution/Spiked-curve
b.) Abnormal distribution/Bell-curve
c.) Normal distribution/Bell-curve
d.) Abnormal distribution/Spiked Curve

answer; i believe its (ovulation);

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;

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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.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.