For Most Terrestrial Ecosystems, Pyramids Composed of Species Abundances, Biomass

question 55

Multiple Choice

For most terrestrial ecosystems, pyramids composed of species abundances, biomass, and energy are similar in that they have a broad base and a narrow top. The primary reason for this pattern is that ________.

• A) secondary consumers and top carnivores require less energy than producers
• B) at each step, energy is lost from the system
• C) biomagnification of toxic materials limits the secondary consumers and top carnivores
• D) top carnivores and secondary consumers have a more general diet than primary producers

---

Definitions:

Melanocyte-Stimulating Hormone

A hormone involved in the regulation of melanin production in the skin, affecting skin pigmentation.

Skin Pigmentation

The coloring of the skin caused by melanin production, affecting its tone and appearance.

Cortisol

A steroid hormone produced by the adrenal glands, involved in the body's response to stress and regulation of metabolism.

Steroid Hormone

A type of hormone derived from cholesterol, including androgens, estrogens, glucocorticoids, and mineralocorticoids, that regulates various bodily functions.