Consider the food web seen here. One member, the northern spotted owl, lives in cavities of trees in old-growth forests. Old growth forests contain trees that are more than 200 years old and have not been cut, pruned, or managed. Imagine that these forests have been heavily logged. Predict the outcome on this food web if the habitat of the owl is removed. A) The food web will collapse without this top-level consumer present. B) The niche filled by the owl will be filled by other predators like the hawk and fox. C) The niche filled by the owl will be empty. The other animals within the food web will grow unchecked. D) Without the owl present, the empty niche will result in an overpopulation of hawks. Eventually the lower-level consumers will disappear.

the answer will be a) proteins i believe

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.