Which of the following describes a relationship of parasitism?

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

Hi,

The correct answer option is B; A tapeworm latches itself in the intestines of a rat, feeding off all the nutrients eaten by the rat

Explanation:

In parasitism, one of the organism, the parasite lives in or on the other organism namely the host causing it harm and sometimes death.For example a tick that lives on dogs is a parasite.In this answer choice, the rat is the host whereas the tapeworm is the parasite.

Best of Luck!

c

explanation:

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."