A leech attaches itself to the gums of a crocodile and sucks the crocodile's blood. Then, the crocodile opens its jaws so that an Egyptian Plover bird can kill and eat the leech. The relationship between the crocodile and the Egyptian Plover is an example of

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.