Every ecosystem must have _____

A) autotrophs and heterotrophs
B) producers and primary consumers
C) photosynthesizers
D) autotrophs


D

Biology & Microbiology

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Describe how negative feedback, positive feedback, and feedforward are similar and dissimilar when it comes to homeostatic mechanisms.

What will be an ideal response?

Biology & Microbiology

Nutritive tissue within angiosperm seeds.  

 Choose the LETTER of the best match: A. hypocotyl B. endosperm C. scutellum D. radicle E. epicotyl

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Neuroglia cells that have lipid-rich cell membranes and form insulating sheaths of myelin are called

A. adipocytes. B. erythrocytes. C. islets of Langerhans. D. Schwann cells. E. mucus cells.

Biology & Microbiology

All fungi are

a. unicellular. b. multi-cellular. c. autotrophic. d. heterotrophic. e. photosynthetic

Biology & Microbiology