All of the following chemical reactions are double replacement reactions except
a. mg(oh2)2 + 2hci → mgcl2 + 2h2o
b. pb(no3)2 + 2ki → 2kno3 + pbl2
c. ch4 + 2o2 → co2 + 2h2o
d. hci + naoh → nacl + h2o
can never get this one figured out. : (

And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?

In what part of the body does the most muscle activity happen?

Drag the tiles to the correct boxes to complete the pairs. match wach fossil with the layer where it’ll be present based on these condition