Match the following mechanisms (Column I) with their correct example (Column II).

Column I	Column II
A. Heat-generating and heat-retaining mechanisms	i. increased metabolic rate (thyroid hormones, sympathetic nervous system)
B. Heat-dissipating mechanisms	ii. vasodilation of blood vessels of the skin (decreased sympathetic tone)
	iii. increased activity of sympathetic cholinergic fibers to sweat glands.
	iv. shivering
	v. vasoconstriction of blood vessels of the skin (increased sympathetic tone)

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#Question id: 12677

#10. Ecological Principles

Aquatic ecosystems that are most readily damaged by acid are those that lack an important buffer that dissolves into the runoff after a precipitation event. What is this buffer?

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#Question id: 4317

#3. Fundamental Processes

Which of the following functions does the product of the p53 gene carry out?

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#Question id: 5028

#11. Evolution and Behavior

What is the probable sequence in which the following clades of animals originated, from earliest to most recent?

1. tetrapods

2. vertebrates

3. deuterostomes

4. amniotes

5. bilaterians

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#Question id: 18370

#12. Applied Biology

Corn, wheat, soybean, peas, and beans are few crops which are used as hyperaccumulators as they can 

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#Question id: 19845

#13. Methods in Biology

SYBR Green qPCR method is based on____I_______ with the _____II______ relationship.