When the comb jelly, mnemiopsis leidyi, was introduced into the black sea, its population exploded to 500 comb jellies per cubic yard in 1988. the jellies devoured all the zooplankton and fish larvae, drastically reducing the numbers of the native fish populations. this situation demonstrates?
a. the difference between biotic and abiotic factors in an ecosystem.
b. effects of local evolution or migration on an ecosystem.
c. the impact of removing or adding organisms to an ecosystem.
d. the types of interactions between organisms in an ecosystem.

The correct answer is option c. the impact of removing or adding organisms to an ecosystem.

The ecosystem can be disturbed by the removing or adding any species. Every species in the ecosystem have their own influence on the ecosystem. In this case,l the com jellies are the invasive species, the addition of these comb jellies has resulted in the imbalance of the ecosystem, as they have devoured all the zooplanktons and larvae, which are food for other organisms. So, this is an impact of the addition of species in the ecosystem.

measuring physical properties lab reportinstructions: in the physical properties lab, you will test the physical properties of different building materials in order to pick the appropriate materials for a new home in tiny world. record your observations and test measurements in the lab report below. youwill submit your completed report.name and title: lyric lawton, mr.herbert, 10/13/17, physical properties lab. objective(s): i need to parvus build his house out of the right material, so he will stay cool in the mountains.hypothesis: if we use wood to build the roof of the house, then the temperature inside the house will remain cooler.if we use clay brick to build the walls and floors of the house, then the temperature inside the house will remain cooler.if we use aluminium to bring electricity into the home, then it will allow electricity to flow into the home at a faster rate.if we use iron to construct the latches on the windows and doors, then the magnetism will keep the latches secure.