if + means divided by – means added to × means subtracted from and ÷ means multiplied by then what is the value of   24 ÷ 12 – 18 +9 ?

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#Question id: 18594

#Unit 11. Evolution and Behavior

Rapid development of angiosperms during___

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#Question id: 33153

#Unit 2. Cellular Organization

Activation of APC/C depends primarily on association with one of two activating subunits (Cdc20 or Cdh1), because:

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#Question id: 4999

#Unit 11. Evolution and Behavior

In the 5—7 million years that the hominid lineage has been diverging from its common ancestor with the great apes, dozens of hominid species have arisen, often with several species coexisting in time and space. As recently as 30,000 years ago, Homo sapiens coexisted with Homo neanderthalensis. Both species had large brains and advanced intellects. The fact that these traits were common to both species is most easily explained by which of the following?

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#Question id: 12461

#Unit 10. Ecological Principles

A diagram of a food web, for the following questions. (Arrows represent energy flow and letters represent species.)

If this were a marine food web, the smallest organism might be

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#Question id: 12936

#Unit 13. Methods in Biology

Adding small double-stranded molecules with one internal site for a restriction endonuclease,termed ______ to cDNA.