<h2>What is a feedback mechanism?</h2>
A feedback mechanism is a physiological regulation system in a living body that works to return the body to its normal internal state, or commonly known as homeostasis. In nature, feedback mechanisms can be found in a variety of environments and animal types. Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause-and-effect that forms a circuit or loop. The system can then be said to feed back into itself.
Examples:
- Menstrual cycle. At the beginning of the menstrual cycle, the ovaries release the hormone estrogen. The estrogen acts as a stimulus for the positive feedback loop. ...
- Childbirth. Figure: Normal childbirth is driven by a positive feedback loop.
Ocean water is a good example of their sources
Answer:
The correct answer is c. The legs of a bird and the legs of an insect
Explanation:
The structures that are driven from a common ancestor are called homologous structures. They can look different superficially but they are related developmentally. Homologous structures are formed by divergent evolution for example forelimbs of bat and humans are homologous structures.
So it does not mean that homologous structures of two different animals perform the same function. So here the pair which is least likely to share the homologous structure is the legs of a bird and the legs of an insect because it is not derived from same common ancestor and does not show homology.
The Duke<span> and King spend a few days plotting how to recover their fortunes. Soon, they reach a village named Pikesville. </span>The King<span> leaves and tells the Duke and Huck to follow him if he does not return by midday. After he fails to reappear, they go to find him, leaving </span>Jim<span> with the raft. Huck and the Duke search for quite some time, and finally find the King in a tavern. Soon, both the Duke and King are drunk.</span>
Answer:
Flat bones serve as points of attachment for muscles and often protect internal organs.
Explanation: