Two objects are placed a certain distance from each other. The amount of gravitational force between the two objects depends on their masses and the distance between them.
As the masses of the objects decrease, the force of gravity between them
As the distance between the objects
decreases, the force of gravity between them
OA. increases, increases
OB. decreases, increases
OC. decreases, decreases
OD
increases, decreases

OB. decreases, increases

Explanation:

The formula is F = GM1M2/r^2. so you can see the gravitational force is directly proportional to the masses and inversely proportional to the distance.

The answer is B. decreases, increases.

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."