Complete Question: In apneustic breathing, which is practiced by most marine mammals:
A. A small amount of air is kept in the lungs before diving
B. A large amount of air is kept in the mouth before diving
C. Normal breathing is maintained before diving
D. Several deep breaths are taken before exhaling and diving
E. No actual breathing takes place before diving
Answer: D. Several deep breaths are taken before exhaling and diving.
Explanation:
Common dolphins, whales and other marine mammals are known to undergo apneustic breathing. This breathing process is characterized by periodic or several breathe inhalation, followed by holding their breath and then exhaling them.
Marine mammals can afterwards, went on to dive. This process prevent high water loss out. Thus, they make fewer respirations while maximizing the amount of oxygen produced for optimal consumption.
Answer:
(4) use a larger number of snails
Explanation:
The size of sample selected from a population of interest during a research has effect on the accuracy/validity of the outcome of such research. The effect of sample size can be deduced from the formula for determining sample size to be selected during a research which is expressed below:
Where <em>Z-score = confidence level</em>
<em> SD = Pre-determined standard deviation</em>
<em> ME = Margin of error.</em>
<em>The margin of error is inversely proportional to the sample size. Hence, the higher the sample size, the lower the error margin and vice versa.</em>
<em>The student could have increased the validity of the outcome of his research by using a larger number of snail samples in each of the tanks.</em>
The correct option is option 4.
Hello!!
-A local conservation issue would be endangered species/animals. With the amount of animals that are on the endangered/threatened species list decrease the amount of food that we can eat, such as fish. Fish produce calcium carbonate, which helps lower the amount of CO2 produced and keep the waters from becoming too acidic. If you save the fish, you could also help save the environment.
Reflect:
-I chose this topic because this is something that should be paid more attention to help save them.
-I can stop overfishing so the fish can help keep down the amount of carbon and acidity in the water.
-Explain how they help our oceans/waters. Persuade people to stop overfishing and depleting the amount of fish in our waters.
I hope I helped!! This was just to give you a couple of thoughts. Add more on if you want to. Have a great night, Pjj3!! :)
Animals so we would know where each one was
