Which of the following atmospheric gases is changing the global climate?

A. hydrogen
B. carbon dioxide
C. oxygen
D. ozone
E. water vapor


Answer: B

Biology & Microbiology

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Examples of transgenic organisms include:

A. crop plants engineered to resist insect pests. B. rice enriched with vitamin A. C. sheep that produce a human protein in their milk that is used to treat emphysema. D. laboratory mice that develop heart disease and diabetes. E. All of the answer options are correct.

Biology & Microbiology

The term angiosperm refers to:

A. the narrow sperm of angiosperms B. the enclosure of the seed within a fruit C. the presence of endosperm D. the branching of vascular veins E. none of the other choices provided

Biology & Microbiology

Hummingbirds are

a. heterotherms. b. endotherms. c. ectotherms. d. ectotherms during the day and endotherms at night. e. none of these.

Biology & Microbiology

During translation, attachment of a "start" codon to the small ribosomal subunit constitutes the beginning of the ________ stage

Fill in the blank(s) with correct word

Biology & Microbiology