C i’m pretty sure but don’t take me as your first answer i just need to answer a question to ask one.
Im pretty sure the answer is mutations in the DNA of genes because i believe the other 3 are correct
Mu = 8.66 × 10^25 kg
Explanation:
centripetal force = gravitational force

where
m = mass of moon Ariel
mu = mass of Uranus
r = radius of Ariel's orbit
v = Ariel's velocity around Uranus
To find the velocity, we need to find the circumference of the no orbit and then divide it by the period (2.52 days):
circumference = 2πr = 2π×(1.91 × 10^8 m)
= 1.2 × 10^9 m
period = 2.52 days × (24 h/1 day)×(3600 s/1 hr)
= 2.18 × 10^5 s
v = (1.2 × 10^9 m)/(2.18 × 10^5 s)
= 5.5 × 10^3 m/s
(5.5 × 10^3 m/s)^2/(1.91 × 10^8 m) = (6.67 × 10^-11 m^3/kg-s^2)Mu/(1.91 × 10^8 m)^2
Solving Mu,
Mu = 8.66 × 10^25 kg
Net force is determined by adding up all of the individual forces on an object. For example, to determine the net force on an airplane, you would add up the lift, weight, thrust, and drag<span>. If forces are in opposite directions, like lift and weight, then you subtract them. During takeoff, the net force on an airplane is forward and up. During landing it is backwards and down.</span>