ishing is one of the most significant drivers of declines in ocean wildlife populations. While fishing is not inherently bad for the ocean, it is when humans catch fish faster than stocks can replenish, a practice called overfishing. Overfishing decreases the number of species living in the marine ecosystem. How does overfishing affect sustainability?
Question 2 options:
Overfishing eliminates non-native species.
Overfishing alters the food chain.
Overfishing causes algal blooms.
Overfishing introduces invasive species.
Overfishing alters the food chain.
Overfishing alters the food chain.
Overfishing affects sustainability in several ways, but out of the given options, the correct answer is: Overfishing alters the food chain.
Explanation:
When fish populations are overfished, it disrupts the natural balance within the marine ecosystem. As certain species are targeted by fishing activities, their numbers decline, and in some cases, they are even driven to extinction. This alteration in fish populations has a cascading effect on the food chain.
Many fish species play crucial roles in the food chain by either being predators or prey. When the population of a predator fish decreases due to overfishing, the prey species below them may experience a population surge. This can lead to an unbalanced ecosystem where certain species become more abundant, creating negative impacts on their own prey and other dependent organisms.
Furthermore, overfishing can also lead to a shift in the abundance of specific species within the food chain, causing a disruption in the overall balance. This can result in decreased biodiversity and potential ecosystem collapse.
While the other options mentioned - eliminating non-native species, causing algal blooms, and introducing invasive species - may also have negative impacts on the environment, they are not directly related to the consequences of overfishing on sustainability.