Answer:
D disruption of hibernation or migration cycles
Answer:China
Explanation:
It is the most populated country right now with a whoppng 1.4 billion people
Answer:
it from the planet is 4.51 unit
Explanation:
given data
time t1 = 7 days
distance a1= 5.0 units
time t2 = 6 days
to find out
How far is it from the planet
solution
we know that from Kepler second law of planetary motion
T² is directly proportional to a³
so T² = K a³ ...........1
here for for both time we can say

a2³ = a1³ × 
a2³ = 5³ × 
a2³ = 4.51 unit
so it from the planet is 4.51 unit
Pastoral nomads are known to depend on domesticated
livestock, thus being called herders.
They also migrate in an established place to find lands to be used for
pastor, concluding that they move from place to place.
So the answer is number 2, herders, and 3, move from place
to place.