When two separate species have body structures such as specific bones that are the same but the two species are very different these structures are known as

analogous structures
homologous structures
vestigial structures
embryological structures

The correct answer is option A, Analogous structures

Explanation:

Analogous structure develop in species that live in similar kind of environment even though the two species are extremely different from each other .Being developed under similar conditions,  the function and look of the analogous structures are more or less same. For example the wings in flying animals such as bats, birds, insects, and even fish are similar to each other not only in function but also in structure (wings of all these species is primarily composed of feathers, scales, hair)

i'd say that the moon rock is about 2.2 billion years old.

starchy vegetables are high in carbohydrates.

starchy vegetables contain more carbohydrates than non-starchy vegetables.

explanation:

there are two primary categories of carbohydrates, essentially differentiated on the basis of their carbohydrate content (which is in the form of starch - a complex carbohydrate):

those vegetables which contain little amounts of starch are termed as non-starchy vegetables, and some examples include: artichokes, broccoli and bean sprouts.

vegetables high in their starch content are distinguished as starchy vegetables, and some examples include: potatoes, chickpeas and corn.