The primary cause of the current increase in levels of atmospheric CO2 is the burning of ________ by humans

Fill in the blank(s) with correct word


fossil fuels

Biology & Microbiology

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Class I MHC proteins have grooves with open ends

Indicate whether the statement is true or false.

Biology & Microbiology

If the copy number of a proto-oncogene is increased by gene duplication then the proto-oncogene has undergone

A. a missense mutation. B. gene amplification. C. a chromosomal translocation. D. retroviral insertion. E. a nonsense mutation.

Biology & Microbiology

Glucose is made during which of the following reactions?

A) The light reactions only B) The Calvin cycle only C) Both the light reactions and the Calvin cycle D) Neither the light reactions nor the Calvin cycle

Biology & Microbiology

One application of modified flower parts has been the development of cultivated flowers from wild ones such as with

A. poinsettias. B. roses. C. oranges. D. petunias. E. apples.

Biology & Microbiology