Answer:
A homologous structure can be described as structures present in similar and different species. These structures might not perform the same functions but are similar because they might have a common ancestor in the past.
An example of a homologous structure is the arms of a human and the wings of a bat. Although the arms of a human and the wings of a bat do not perform the same function yet they do have similarities because they have a common ancestor in the past.
Answer:
it's equal to mass of CaO plus the mass of CO2 by law of conservation.
I cant see plz zoom in on some questions and ill help
Scientists believe the earth is approximately 4 1/2 billion years old
