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Reptiles had evolved at least by the ____, likely descended from labyrinthodonts.

Name the four levels of group organization of living things in order of increasing complexity.

​The large size of some Pleistocene mammals was probably an evolutionary adaptation to allow these animals to live in tropical climates.

The metric system uses names based on a context of measure and then adds a prefix (decimal multiplier) to define the measure.

Put into place in 1968  this multi-lateral treaty limits the spread of nuclear weapon technology

The total amount of currency in circulation is defined as the _________

The ban on these types of weapons in the late 20th to early 21st century was the result of years of public pressure and work by NGOs.

Most foreign aid is _______, coming from one country directly to another

​Vascular plants having flowers and seeds are called ____.

Which of these mandibular first molar roots is wider and stronger ?