Mineral crystals are divided into six mineral crystal systems based on geometry and angles between axes.Crystals can be didvided into categories of habit the crystals is the appearance in nature.
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C. often because t<span>here are three major types of </span>plate<span> boundaries. If </span>two<span> tectonic </span>plates<span> collide, they form a convergent </span>plate<span> boundary. Usually, one of the converging </span>plates<span> will move beneath the other, which is known as subduction. Deep trenches are often formed where tectonic </span>plates<span> are being subducted and earthquakes are common</span>
Answer:
Analogous structures are structures which serve similar function in different organisms and evolved independently in two living organisms while homologous structures are the structures which are similar in related orgnanism due to inheritance.
The wings of Pterodactyl, bats and birds are conisdered as analogous structure. <u>they are similar in structure and same in function and evolved independently in the two groups of animals.</u>
Bones in forelimbs of pterodactyl, bats and birds are considered homologous structures as <u>they inherited the pattern from a common ancestor and have different functions.</u>
