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igomit [66]
3 years ago
12

Which Chemicals are major contributors to the Ozone layer destruction? Select TWO answer choices.

Biology
2 answers:
olga55 [171]3 years ago
5 0
The answer is chlorine and bromine
Romashka [77]3 years ago
3 0

Answer:

The damage to ozone layer is done by halogens such as Chlorine and Bromine.

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True or False: Meiosis halves the chromosome number, whereas mitosis maintains the same chromosome number.
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Meiosis is the kind of cell division that results in the production of daughter cells with each cell having half number of chromosomes as the parent cell. Meiosis is the cell division employed by reproductive cells to produce gametes/sex cells. Meiosis occurs in two stages i.e. Meiosis I and II. The chromosome number reduces by half in gametes in order to ensure that after fertilization of both male and female gamete, the resulting organism has the correct set of chromosomes. e.g diploid organism produces haploid gametes which fuses to produce a diploid organism again.

Mitosis is another type of cell division that results in identical daughter cells. They are identical in the sense that they possess the same number of chromosomes as the parent cell that divided. For example, a diploid cell undergoes mitosis to produce two diploid daughter cells.

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