C because who whould mesure a trend
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C. All cells are produced by other living cells
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Species diversity refers to the number of different species in an ecosystem or on the earth as a whole. This is the commonest way to measure biodiversity.
Answer: 4
Explanation: There are 4 valence electrons in group 14, the Carbon group.
Answer:
The sex chromosomes are referred to as X and Y, and their combination determines a person's sex. Typically, human females have two X chromosomes while males possess an XY pairing. This XY sex-determination system is found in most mammals as well as some reptiles and plants.
Men determine the sex of a baby depending on whether their sperm is carrying an X or Y chromosome. An X chromosome combines with the mother's X chromosome to make a baby girl (XX) and a Y chromosome will combine with the mother's to make a boy.
Explanation:
