Nico is reading an article about two fossils that appear to have a common ancestor. fossil x has a much more complex bone structure than fossil y.

what does this most likely suggest about the fossils?
fossil x evolved later in earth's history than fossil y.
fossil x evolved earlier in earth's history than fossil y.
fossil x is less than 100,000 years old.
fossil y is more than 100,000 years old.

Ans.

According to theory of evolution, all living organisms are evolved from a common ancestor and simple life forms progressively evolved into more complex life forms. It means, evolution represents a gradual process, in which diversification of simpler organisms into complex life forms takes place.

As fossil of organism X shows a more complex bone structure than fossil of organism Y, fossil X must have evolved after fossil Y.

Thus, the correct answer is option). 'fossil X evolved later in Earth's history than fossil Y.'

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

carbon atoms, hydrogen, oxygen, and nitrogen.