Examlex
For each statement, select the best choice that represents the description given.
-evolutionary history of a species
A)character
B)clade
C)cladistics
D)microevolution
E)dimorphism
F)phylogeny
G)balanced polymorphism
H)cladogram
I)fixed allele
Covalent Bonds
Chemical bonds formed by the sharing of one or more pairs of electrons between atoms to achieve a more stable electron configuration.
Organic Molecule
Molecule that always contains carbon and hydrogen, and often contains oxygen as well; organic molecules are associated
Carbon Atom
A chemical element with symbol C and atomic number 6, fundamental to all known life, able to form stable bonds with many elements including itself.
Organic Molecules
Chemical compounds composed primarily of carbon atoms in rings or long chains, to which are attached other atoms such as hydrogen, oxygen, and nitrogen.
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