What are the science and engineering practices

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Explanation: Asking Questions and Defining Problems.

Developing and Using Models.

Planning and Carrying Out Investigations.

Analyzing and Interpreting Data.

Using Mathematics and Computational Thinking. .

Constructing Explanations and Designing Solutions.

Engaging in Argument from Evidence.

other information encoded in your genes might distinguish you from the others in the group

the species living around the vents are especially good at dispersal.  

deep-sea vent originates on the floor of the ocean when seawater circulates through hot volcanic rocks, usually situated where the new oceanic crust is being produced.  

biological dispersal refers to the movement of species from their location of birth to their site of breeding, or from breeding site to another. similarly, the oceanic dispersal refers to the movement of the species from one land mass to another by sea crossing.