Answer:
Explain:
Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. These structures may or may not have the same function in the descendants. Figure below shows the hands of several different mammals. They all have the same basic pattern of bones
They are ineffective against viral infections because viruses can not be treated with antibiotics.
It's then independent variable.
This is the case because Eleanor is making these temperature changes.
Extra info.
The dependen variable would then be the result of hatching. This is the case because it depends on the different temperature to see what the effect of temperature change is affecting the time of hatching