12. If a molecule of socium [small, fat-insoluble) needs to get into a cell, but there's already a high concentration of sodium inside the cell compared to outside:
a. To get into the cell, the molecule must move down the concentration gradient
b. For the molecule to get into the cell, energy must be used.
c. The molecule could enter the cell using simple diffusion.
d. The solution outside the cell is isotonic.

If a molecule of socium [small, fat-insoluble) needs to get into a cell, but there's already a high concentration of sodium inside the cell compared ..

Explanation:

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.