What is the main mechanism that results in evolution?

What will be an ideal response?


natural selection

Biology & Microbiology

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Most dinosaurs died out by the end of the ____ period

a. Triassic b. Jurassic c. Cretaceous d. Quaternary e. Permian

Biology & Microbiology

Both mechanical and limited chemical digestion occurs in the mouth.

Indicate whether the statement is true or false.

Biology & Microbiology

Control of respiratory rate, heart rate, and blood pressure is integrated through the

A) cerebral cortex. B) cerebellum. C) thalamus. D) hypothalamus. E) medulla oblongata.

Biology & Microbiology

What class do spiders, scorpians and harvestmen belong to?

A. Arachnida B. Arthropoda C. Chelicerata D. Crustacea E. Malacostraca

Biology & Microbiology