Which characteristic of living things is important to the survival of a group of animals rather than an individual member of this group? why? (2-3 sentences)

The ability to adapt.

Explanation:

If a group of species has the ability to adapt according to their environment, it will have a greater chance of survival even if there is drastic change in their environment.

But if this only happened to an individual rather than a group of animals, then whole of the group would not benefit from it since they would not be unable to evolve if it could not apply to the entire species when only one survives, leaving an endangered species.

answer; both surfaces of the membrane are nonpermeable

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.