'Red shift' is a key concept for astronomers. The term can be understood literally - the wavelength of the light is stretched, so the light is seen as 'shifted' towards the red part of the spectrum.
Hope this helps.
Waxes (option a) is correct
The correct answer is controlled braking.
If someone suddenly pulls out in front of the person while driving, the natural reaction is to apply the brakes. Although, this is a good reaction if there is the adequate distance to stop and one applies the brakes accurately.
While in case of emergency stops, one should apply brakes in a way, which will maintain the vehicle in a straight line and permits one to turn if it becomes essential. For this, the person can use stab braking method of controlled braking.
In controlled braking, one applies the brakes as hard as one can without locking the wheels. There is a need to keep steering wheel movements very slight while attempting this. If one needs to make bigger steering amendments or if the wheels lock, release the brakes.
Population control may involve culling, translocation, or manipulation of the reproductive capability. The growth of a population may be limited by environmental factors such as food supply or predation.
