Examlex
Unique to flowering plants, the making of an embryo-nourishing ____ is an outcome of double fertilization.
Boolean Operator OR
A logical operator used in search engines, databases, and programming to retrieve records or data that match either of two or more specified conditions.
PsycINFO
A comprehensive bibliographic database that provides abstracts and indexing for literature in psychology and related fields.
Origin of the Universe
The origin of the universe pertains to the various scientific theories and philosophical ideas related to the beginnings and formation of the universe.
Alternate Explanations
Different theories or reasons offered to explain the same phenomenon or observation.
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