O=C=O
for CO2, cabon dioxide
Unused structures are classed as vestigial structures. One example is the wings of a penguin or , ostrich, who are flightless birds. Another example is the sightless eyes of creatures that dwell in deep dark caves - where they wouldn't be able to see at all.
Analogous structures are structures that have the same function but different structures. They have evolved independently in different organisms to perform similar roles in response to similar environmental pressures. An example is the wings of birds and bats, which have different structures but both serve the same function of flight.
what is Similar structures that related species have inherited from a common ancestor
Data structures could be used to implement an efficient database. Linked lists for example will optimize insertion and deletion for ordered lists.
Control Structures can be combined by a process called Nesting. Example: if (x==true) if(y==true) { Foo() }
Homologous structures are structures that indicate a related evolutionary ancestry, not just similarity. For example, the flipper of a whale, the wing of a bird, and the arm of a a human are similar in their bone structure. Analogous structures are structures that are similar in appearance and function but are not the result of shared ancestry. For example, the wings of a birds and insects have the same function, but they do not reflect a shared ancestry.
No, nitrate (NO3-) is not an example of an ion that forms resonance structures. Nitrate has a stable structure with a formal charge distributed over all the atoms in the ion, and it does not exhibit resonance.
mass structures are structures made by humans but with the materials from nature such as pyramids
The elements of the arrays are structures. Example: struct { int x, y, z; } cube [8]; cube[0].x = 1;
Homology refers to structures that are similar due to shared ancestry, while analogy refers to structures that are similar due to convergent evolution. Homologous structures have a common evolutionary origin and may have different functions, whereas analogous structures have a different evolutionary origin but serve similar functions. An example of homology is the pentadactyl limb in vertebrates, while an example of analogy is the wings of birds and butterflies.
vestigial structures
this question is to hard cant find it