<span>Cells are living units, surrounded by a membrane, with or without nucleus (this is also the majo division of cell types). Cells can live "on their own", if certain conditions are fullfilled. Viruses live inside (some) cells and they are dependent on those cells on survival</span>
The correct answer would be D. DNA evidence showing it was more closely related to mammals than to other vertebrates <span />
Explanation:
because the pressure exerted by artery is more than that of vein due to its narrow lumen and thick walls...causing it difficult to clot.
Answer:Ice melts when heat energy causes the molecules to move faster, breaking the hydrogen bonds between molecules to form liquid water. In the melting process, the water molecules actually absorb energy.
Explanation:
The geologic features that help scientists to determine the relative ages of rocks by their positions include index fossils, intrusions, and cross-cutting relationships (Option d).
<h3>What does geological age mean?</h3>
The expression geological age refers to the relative age of a given rock and or fossil (i.e. a piece or trace of dead organism) in a geological time scale.
In conclusion, the geologic features that help scientists to determine the relative ages of rocks by their positions include index fossils, intrusions, and cross-cutting relationships (Option d).
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