Describe some key features that make tropical rain forests the most productive biome
What will be an ideal response?
Tropical rain forests have abundant, regular rainfall, a warm temperature, and little variation in day length, which allows photosynthesis to continue year-round. Of all land biomes, tropical forests have the greatest primary production. Per unit area, they remove more carbon from the atmosphere than other forests or grasslands.
Tropical rain forest is also the most structurally complex and species-rich biome.
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One strand of DNA has the sequence 5? GGTCTA 3?. What is the sequence of the other strand?
A) 5? CCAGAT 3? B) 5? ATCTGG 3? C) 3? GGTCTA 5? D) 5? TAGACC 3?
Which statement is correct regarding microbial growth on food at refrigeration temperatures?
A. The absence of light in the refrigerator greatly reduces the growth of most microbial pathogens. B. There is no growth of microbes in food in the refrigerator; the cold temperature kills or inactivates microbial cells. C. Most food does not have enough oxygen content for microorganisms to thrive. D. The growth of microbes in food depends on their optimal growth temperature; some grow slowly and others faster.
Ependymal cells are a type of macrophage
____________________ Indicate whether the statement is true or false.
Which organisms may be a keystone species in a tropical rain forest?
a. gray wolves b. fruit-eating bats c. poison arrow frogs d. fig trees e. fruit-eating monkeys