He is using an arthroscope. Which is use to examine a joint.
I believe it goes in the following order top down
1 5 3 4 2.
<span>Altruism is a selfless behavior so the animal would behave that way because it's intention is to put others before itself.
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We are dependent on photosynthesis because photosynthesis is an essential process in our natural environment that helps to sustain plant life, produce oxygen, reduce Co2, and promotes human and animal well-being.
Because high estrogen halts bone growth
