D. Genetic variation increases the likelihood of an allele being present that is best suited for the environment.
The planets have (their) moons. So the answer would be planets.
Answer:
Its not A..
Explanation:
I chose A - was incorrect
Answer:
KE₂ = 6000 J
Explanation:
Given that
Potential energy at top U₁= 7000 J
Potential energy at bottom U₂= 1000 J
The kinetic energy at top ,KE₁= 0 J
Lets take kinetic energy at bottom level = KE₂
Now from energy conservation
U₁+ KE₁= U₂+ KE₂
Now by putting the values
U₁+ KE₁= U₂+ KE₂
7000+ 0 = 1000+ KE₂
KE₂ = 7000 - 1000 J
KE₂ = 6000 J
Therefore the kinetic energy at bottom is 6000 J.
Answer:
Current- the flow of free charges, such as electrons and ions
Drift velocity- the average speed at which these charges move