QUESTION 24.1
Tobacoo smoke is inhaled into the lungs. Tar from the smoke is deposited in the lungs and this prevents
the lungs from working properly.
Which one of the following is a function of the lungs!
A) To pump oxygenated blood to all parts of your body
B) To transfer some of the oxygen that you breathe to your blood
C) To purify your blood by reducing the carbon dioxide content to zero
D) To convert carbon dioxide molecules into oxygen molecules.

D

Explanation:

The main function of the lungs is the process of gas exchange called respiration (or breathing). In respiration, oxygen from incoming air enters the blood, and carbon dioxide, a waste gas from the metabolism, leaves the blood.

Smoking can cause lung disease by damaging your airways and the small air sacs found in your lungs. Lung diseases caused by smoking include copd, which includes emphysema and chronic bronchitis. If you have asthma, tobacco smoke can trigger an attack or make an attack worse.

D) To convert carbon dioxide molecules into oxygen molecules.​

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.  

so whats the answer