The __________ (nematodes) have an unsegmented body, a cuticle that is molted, a complete gut, and
a false coelom. Fill in the blank(s) with the appropriate word(s).
roundworms
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Identify the structure indicated by #3:
A. uterus B. cervix C. vagina D. ovary E. fallopian tube or oviduct
An asteroid that impacted Earth about 66 million years ago is believed to be responsible for ____
a. the creation of life on Earth b. a global catastrophe that may have wiped out the dinosaurs c. the splitting of one land mass into continents d. a mass extinction of land plants e. the evolution of Earth’s oceans
Why were Darwin's ideas so widely accepted by scientists of his day?
A) He published his book soon after he returned to England, and all his recollections were fresh in his mind. B) Darwin's ideas fit well with what most people already understood about evolution. C) Darwin presented extensive evidence from many areas of biology to support his ideas. D) Darwin was from a rich and powerful family.
Reabsorption of water is a major function of the
A) esophagus. B) colon. C) rectum. D) appendix.