Purification of waters while generating power and providing energy for monitoring environmental processes is an application of microbial fuel cells.
Answer the following statement true (T) or false (F)
True
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A sudden or total lack of oxygen can cause unconsciousness in 5–10 seconds. Why?
a. The brain has very high energy requirements and lack of oxygen reduces available energy. b. Oxygen is required for ventilation and lack of ventilation causes fainting. c. Lack of oxygen causes an increase in carbon dioxide, which is toxic. d. The brain needs oxygen to breathe, and when oxygen is not available, it signals the nervous system to cause fainting.
The black bread mold Rhizopus stolonifer and dung-infesting fungi of the genus Pilobolus are members of which fungal phylum?
a. Glomeromycota b. Basidiomycota c. Chytridiomycota d. Zygomycota e. Ascomycota
How does the likelihood of the survival of technological societies restrict the number of civilizations with which we might communicate?
What will be an ideal response?
Vertebrates have which of the following
characteristics? a. endoskeleton b. vertebral column c. well-developed organs d. larger brains e. all of these