Most  joints in the body form levers.                a.  first-class      b.  fourth-class      c.  third-class      d.  second-class

Which best explains why there are 64 possible codons in the genetic code and only 20 amino acids that make protiens of living organisms on earth

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.