Two tectonic plates move toward each other at boundaries.
a. divergent
b. convergent
c. transform
d. oceanic

Rank the three variables in terms of how strongly they affect the "species" composition of the bacterial communities. place the variable with the weakest effect on the left and the variable with the strongest effect on the right.

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).

How many autosomes are in this human karyotype? how many sex chromosomes?