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In the Northern Hemisphere, Seasonal Variation in Temperatures Is Caused

question 57

Multiple Choice

In the Northern Hemisphere, seasonal variation in temperatures is caused mainly by ____.


Definitions:

Cleavage

A cellular division process in early animal embryo development, where the zygote undergoes multiple cell divisions without growth, leading to a multicellular stage.

Karyotype

The number and appearance of chromosomes in the nucleus of an eukaryotic cell. The term is also used for the complete set of chromosomes in a species or an individual organism.

G₂ Phase

A phase in the cell cycle where a cell has completed DNA synthesis and enters a period of growth and preparation for mitosis.

Prophase

The first stage of cell division in both mitosis and meiosis, where chromosomes condense and the nuclear envelope breaks down.

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