Answer: From their food.
Explanation: They convert the food they eat into energy which helps them generate heat.
Viruses aren’t normally considered organisms
The answer to this question would be D (DNA). It can be found in the nucleus of a cell and contains the entire genetic information of a whole.
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).
Learn more about geological age here:
brainly.com/question/15818328
#SPJ1