An ecosystem consists of: Select one: a. All the species in a biological community b. The primary producers within a biological community c. A physical environment within which a biological community lives d. The species with which a biological community interacts e. A biological community and its physical environment

Option E.

A biological community and its physical environment

Explanation:

An ecosystem is A biological community and its physical environment because an ecosystem comprises of the living community or biological community and the non living environment i.e physical environment interacting with each other.

An ecosystem also is a community that comprises of the biotic factors( living part) and the abiotic factors(physical or non living) parts.

Examples of physical or abiotic components are wind, rain, temperature, soil, humidity, latitude e.t.c.

The biotic components comprises of the living organisms.

"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."