Select the correct answer.
A herd of sheep moves up the mountain to graze during summer, and migrates to the valley during winter. What type of migration do the sheep follow?
A.
one direction only
B.
seasonal movement
C.
daily movement
D.
one return journey

It’s C they usually move on cool highlands in the summer and warmer lowlands in the winter:)

I believe it’s seasonal movement, correct me if i’m wrong

Mitochondria is the cell organelle that produced the energy that is needed in the body system in form of atp, that is why it is called the power house of the cell. energy is needed by the living organisms to carry out the activities which sustain life.  if the mitochondria is destroyed atp will not be produced. if the mitochondria is destroyed, energy production will stop and the affected living organism will not have the energy to carry out the necessary life processes; this will lead to the death of the organism.