Answer:
A. Redshift and Blueshift
Explanation:
It’s red shift and blue shift, because this only occurs when the frequency of the wave is made longer or shorter due to the movement of the source relative to the observer.
Answer:
Jackels
Explanation:
Domestic dogs and wolves are part of a large taxonomic family called Canidae, which also includes coyotes, foxes and jackals, according to the Integrated Taxonomic Information System (ITIS). Members of this family are called canids.
In case one fails or falters we can have a backup
It is part of the CARBON CYCLE
The maintenance of an organisms internal environment within certain limits
