Which of the following describes a relationship of predator-prey

oxpecker birds eat parasitic ticks off the backs of zebras

a tapeworm latches itself in the intestines of a rat, feeding off all the nutrients eaten by the rat

a polar bear catches a seal for dinner

birds feed off the insects that are stirred up from the grasses as cattle move through

The correct answer would be A polar bear catches a seal for dinner.

Predator-prey is an ecological relationship between organisms in which one organism kills or hunts the other organism and eats it for nutrition.

The organism which kills the other organism is termed as predator and the organism which gets killed is termed as prey.

For example, tiger and deer follow the predator-prey relationship in which the tiger is the predator and deer is the prey.

Similarly, polar bears are the predators of the seal as they hunt and eat the seals.

A- a polar bear catches a seal for dinner

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.