When considering human impacts to ecosystems, identify the incorrect statement:
Select one:
a. cod, swordfish, halibut and mackerel populations are especially vulnerable to collapse
b. coral reefs providing critical habitat and sources of food for tropical fish are slowly recovering, due to successful enforcement of fishing quotas
c. aquaculture may provide a sustainable alternative for raising farmed fish to feed a growing human population, allowing ocean fisheries to recover
d. over half of global ocean fisheries populations have become severely overharvested within the past century

coral reefs providing critical habitat and sources of food for tropical fish are slowly recovering, due to successful enforcement of fishing quotas

Explanation:

This is a wrong statement because coral reefs contrary to the statement is not recovering, Over-fishing an destructive fishing,(to meet up with increasing demand) are some of the human impacts  reltively control by  the enforcement.

But,acidification  (eutrophication),  and  mass coral bleaching from global warming  are not restricted by the enforcement  of fishing quotas and  are drastically reducing the population of the reefs.This in turn affecting the survival of the fishes, reducing the population,

The correct answer is option D

The digital signals convert the sounds into binary digits zero and one. the phenomenon of converting the sound waves into digits is called as digital audio.

The sound waves of the audio signals is encoded in the form of numerical in a proper sequence.

In this ADC (analog to digital) converter is used which converts the analog form of the sound waves into the the digital form.