A) Which of the following types of evidence would be useful in understanding if

Question

A) Which of the following types of evidence would be useful in understanding if the impact of a comet caused the extinction of the dinosaurs?

B) Use the following information to answer the question.

Due to its system of air sacs connected to the lungs, the respiratory system of birds is arguably the most effective respiratory system of all air-breathers. Upon inhalation, air first flows into posterior air sacs, then into the lungs, and then into anterior air sacs on the way to being exhaled. Thus, there is one-way flow of air through the lungs, along thousands of tubules called parabronchi.

The one-way flow of air along parabronchi makes what type of gas exchange mechanism possible, at least theoretically?

C) Which of the following is the most inclusive (most general) group in which all of the members have fully opposable thumbs?

D) Which of the following statements about the geographic distribution of marsupials is accurate?

E) Marsupials survived in Australia (as opposed to Asia) because ________.

Humans are _______.

more phylogenetic studies more detailed collection of fossils more DNA analyses more comparison of skeletal structures

Explanation / Answer

A. ANS: A. More phylogenetic studies

Phylogenetic analyses have become central to understanding genomes, ecology, evolution and biodiversity.

B. ANS: B. The same as that occurring in fish gills

C. ANS: B. Anthropoids

Anthropoids are the most inclusive (most general) group in all of the members have fully opposable thumbs.

D. ANS: C. They occur in Australia and the Americas

The geographic distribution of marsupials is accurate in Australia and the Americas

E. ANS: B. Australia had separated from Pangea, and eutherians were not able to invade Australia

Theory suggests that there were marsupials everywhere, but that they were an 'inefficient' life form that got crowded out by more efficient predators elsewhere. They survived in Australia because of the continent's isolation and scarcity of natural enemies.

F. ANS: D. Homo sapiens

Humans are Homo sapiens

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.