What are the symptoms of a TB infection?
A. runny nose, sore throat, postnasal drip
B. skin rash, fever
C. bad cough, chest pain, coughing up blood or sputum
D. opportunistic infections, chronic diarrhea
E. lethargy, general malaise
Answer: C
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Angiosperms first appeared during the ____ period
a. Cambrian b. Jurassic c. Cretaceous d. Neogene e. Devonian
The evolution of genetically based, reciprocal adaptations in two or more interacting species is called ____
a. commensalism b. coevolution c. mutualism d. parasitism e. predation
Which of the following statements are true reguarding puberty?
A) Puberty is marked by the onset of pregnancy in females B) Puberty occurs when an individual becomes sexually active C) Girls typically reach puberty between the ages of 10 and 14 D) Boys typically reach puberty between the ages of 12 and 16
Lampreys and hagfishes:
a. are the only extant jawless vertebrates. b. are the only extant air-breathing fish. c. are more closely related to ray-finned fish than they are to cartilaginous fish. d. have lobed fins. e. first appeared within the last 50 million years.