Describe bird evolution as known from the fossil record. What will be an ideal response?


The ancestor of birds was probably a small theropod, and some in China have been found with a
featherlike covering. The birdlike Archaeopteryx had dinosaurlike teeth, tail, brain size, and hindlimb
structure, but had feathers and a wishbone, typical of birds. Two fossils younger than Archaeopteryx
have primitive and advanced features

Environmental & Atmospheric Sciences

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Why is iridium a good indicator of impacts by extraterrestrial bodies?

What will be an ideal response?

Environmental & Atmospheric Sciences

Maize (corn) was domesticated in

A) Africa. B) Europe. C) Asia. D) Mexico. E) Australia.

Environmental & Atmospheric Sciences

According to the principle of uniformitarianism, processes have occurred at the same rates throughout geologic time

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Which of the following is NOT a setting in which regional mountain belts form?

A. upwelling of the mantle B. the collision of India with Asia C. passive margin D. subduction zone E. continental collision

Environmental & Atmospheric Sciences