Oxygen is required for cellular respiration, it is an aerobic process. When no oxygen is present, the anaerobic process(a process that doesn't require oxygen) called fermentation begins creating ATP in smaller amounts. In cellular respiration, Oxygen is used to move electrons through the electron transport chain, and remove excess hydrogen and electrons in the form of water,

As we know ~
Gravitational Force acting on two objects can be easily represented by formula :

so, from above we get :

We can conclude from derived information that, Gravitational force is inversely proportional to the distance between the objects. so if the objects move closer to each other. value of r decreases. hence we can say that Gravitational force increases.
Therefore, the correct choice is A. It increases
Explanation:
I got B from the notes I just took in biology
Answer:This question makes no sense.
Explanation: