When you run around a track at 5 km/h what is your velocity?

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

you should wear a lead protective shield when having teeth x-rays

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-lavira : )

b. climate change will cause an increase in biodiversity of all ecosystems.

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