Which of the following is most likely to cause the greatest disruption to an ecosystem? emptying an aquarium containing non-native species into a local waterway cutting down a small cedar tree to make holiday decorations cleaning the windshield of a car with an alcohol-based glass cleaner mowing the lawn in a city park

Emptying an aquarium containing non-native species into a local waterway.

Emptying an aquarium containing non-native species into a local waterway will most likely to cause the greatest disruption to an ecosystem. A non-native species can be invasive and may disturb the already living native species in the waterway. The non-native species will compete with the native species for food, mates and habitat and can cause decrease in abundance and death of native species. Hence, it will disturb the ecosystem of the local waterway.  

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.

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.