Answer:
Organic matter produced when an organism is alive remains unchanged in unaltered fossil while the opposite happens in cases of altered fossil
Explanation:
When the organic material produced by an organism during the time period when it was alive remains unchanged in the given course of time then it is termed as unaltered or original preservation. for example - bones, teeth etc, remain intact.
While in case if the organic material produced by an organism during the time period when it was alive changes in due course of time by the external forces is called as altered fossil
Answer:
Not likely to be one that high.
Explanation:
A 7 only every 3,400 years so not likely.
The heart is medial to the arm describes the position of the structures. <u>Explanation</u>:
Anatomical terminology provides the knowledge of Some useful terms for describing the body structure. These are divided into three groups of terms which are directional terms, planes of the body, and body cavity. The directional terms are used to describe the position of the structure relative to other structure in the body. Medial comes under directional terms. Medial means towards the midline of body. Here the heart is in the middle or medial of the two arms.
They produce a gas called ethylene.