1. some areas where earthquakes and volcanic activity often occur together are along oceanic ridges where lithospheric plates move apart. if we know the age of the crust and the distance from the ridge center, we can calculate how fast the two plates are moving away from each other. look at the figures of oceanic ridges (spreading centers) a. calculate the half-spreading rate across the mid-atlantic ridge and east pacific rise. this is the rate at which one of the plates is growing.

b. determine the full spreading rate for these same ridges. this is the rate at which the ocean basins are opening

the answer to your question is c.

if you read the house of usher you should know that the house was haunted

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i  

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".