Seedless vascular plants of the ________ period formed the world's coal, oil, and natural gas deposits.

A. Carboniferous
B. Cambrian
C. Cretaceous
D. Jurassic
E. Quaternary


Ans: A. Carboniferous

Biology & Microbiology

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A. 7 B. 14 C. 28 D. 56

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The deciduous forest of eastern North America has experienced dramatic changes over the past two to three centuries, transitioning from a nearly continuous forested area to increasingly patchy areas of forest broken up by farming and development

Some species are more sensitive to severe habitat fragmentation than others. What are some characteristics that might make a species more susceptible to the effects of habitat and population fragmentation?

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Late nuclear equivalence and differential gene expression. What will be an ideal response?

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Crossing a heterozygous parent with a homozygous recessive parent should produce a ratio of dominant-to-recessive phenotypes of approximately _____.

A) 1:1 B) 2:1 C) 3:1 D) 9:3:3:1

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