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7th Grade crossword 10/12/15

Across
A well supported explanation about the natural world
Life cycle of a cell
Controls the traits that a living thing inherits
Chromosomes that have the same sequence of genes and the same structure
A process of cell division where the number of chromosomes decreases by half the original number
Division of cytoplasm of a cell
A description that includes a number and a unit.
The exactness of the measurement
Down
The systematic study of natural events
The process of obtaining information by using the senses
Information gained from observation
The period of the cell cycle where cell growth takes place but no visible signs of cell division is present
Describes a basic principal of nature that always occurs under certain conditions
Process of cell division that forms two new nuclei
A variable that is not allowed to change in the investigation.