The correct answer is Certain flightless beetles have wings. Their wings are an example of an adapted structure.
These beetles have adapted structure in them and it is inherited from their ancestor's gene pool. as the time passes by the flightless beetles don't have wings as it was not needed but later become adopted due to environmental needs.
<h3>What is adapted structure?</h3>
Thick, hardened beetle wings, called elytra, cover the whole body and it has covered whole body of beetles. The adaptive features are inherited from their ancestor's gene pool.
Hence concluded that adapted structures in flightless beetles have wings. Their wings are an example.
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brainly.com/question/1213023
The mesoderm is one of the germ layers present in an embryo and it develops primarily into muscles and organs. The radioactive marker would therefore be visible in the adult organism's cardiac muscle cells, smooth muscle cells, skeletal muscle cells, red blood cells and many other such specialized cells.
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oxygen
Your cells need oxygen to convert the nutrients you eat into energy for your body. In the process of making that energy, some waste products are produced. One of the main waste products is a gas called carbon dioxide.
