Question

As you saw in section 2, do or die, fish are sometimes lost.

A. True
B. False
C. Not enough information
D. Irrelevant information

Answer 1

Without adequate context, it is impossible to confirm whether fish are sometimes lost as mentioned in the question. The only plausible answer is that there is not enough information to determine the truth of the statement.

Step-by-step explanation:

The question provided seems fragmented and lacks a clear context to propery assess whether fish are sometimes lost, as mentioned at the beginning. The available options given (A. Yes, B. No, and they are not mutually exclusive either, C. No, but they are mutually exclusive, D. Not enough information given to determine the answer) suggest that we're dealing with a scenario where additional context is required to make a determination. Therefore, the most appropriate answer according to the provided options would be D. Not enough information given to determine the answer.

Regarding the other provided examples comparing imperfect information, they all focus on the unpredictability or uncertainty associated with various situations like evaluating the condition of computers or estimating population sizes. These examples show different scenarios where the level of information at hand can influence decisions and outcomes, which, in biological studies like assessing animal populations, can affect the results significantly.

Answer 2

The way that might help prevent fish kills as phosphorus concentrations increase is `Installing aerators that increase the oxygen concentration in the water`

The answer is option ⇒a

Step-by-step explanation:

To prevent fish kills as phosphorus concentrations increase due to eutrophication, installing aerators that increase the oxygen concentration in the water is the most effective solution. Eutrophication occurs when excess nutrients, like phosphorus, enter the lake and promote algal growth. As these algae die and decompose, they consume oxygen from the water, leading to oxygen depletion and fish kills.

By installing aerators, we can address this oxygen depletion issue. Aerators are devices that introduce air into the water, increasing the oxygen concentration. This helps to replenish oxygen levels, creating a more favorable environment for fish survival.

The increased oxygen levels benefit fish in several ways. First, fish require oxygen for respiration, and higher oxygen concentrations ensure that they have enough to breathe. Second, higher oxygen levels support the growth of beneficial aerobic bacteria, which break down organic matter and help maintain water quality. Lastly, higher oxygen concentrations can discourage the growth of harmful anaerobic bacteria, which thrive in low-oxygen conditions and can produce toxins that harm fish.

The answer is option ⇒a

Your question is incomplete, but most probably the full question was:

As you saw in Section 2 ("DO or Die"), fish are sometimes lost from lakes as eutrophication occurs. Given what you've learned in this tutorial about why these fish kills occur, which of the following might help prevent fish kills as phosphorus concentrations increase?

a. Installing aerators that increase the oxygen concentration in the water

b. Periodically adding more algae to the lake throughout the year

c. Adding excess nutrients to promote increased algal growth in the lake

d. Trawling the lake with specialized nets to filter out extra zooplankton