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vitfil [10]
3 years ago
10

How is human impact on the tundra and the rainforests similar?

Biology
1 answer:
Katyanochek1 [597]3 years ago
8 0
The human impact on the tundra and the rainforests have been negative to say the least. The destruction of wild habitat and increased pollution due to logging, mining etc have negatively affected the animals living in that region. Deforestation and habitat loss due to farming and oil exploration has increased the pollution level in these regions.
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I need help on this multiple choice question.
nevsk [136]
Your answer is correct (meiosis)
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Mutation is one cause of variation. State one other cause of variation.
Anestetic [448]
Here are at least 2:distribution,and Mating Patterns.
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give an example of a question that can be answered by science & a question that could be better answered by philosophy
never [62]

Answer:

Scientific: "does a sunflower or rose grow faster?"

Philosophy: "does leading by example help guide others?"

Explanation:

the first is scientific because you do experiments to find out the result as a fact.

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6 0
3 years ago
At which point does the cell transform from diploid to haploid during meiosis? Explain in
Firlakuza [10]

<u>Answer:</u>

During Meiosis I the cell transform from diploid cell to haploid and ends after Telephase I.

<u>Explanation:</u>

The one and only purpose of Meiosis is to produce gametes-sex cells or sperm and eggs in the human body. The objective is to make daughter cells with precisely half the same number of chromosomes as the starting cell. In humans, meiosis is a cycle of division that .allows cell transformation from a diploid cell (one with two sets of chromosomes) to haploid cells (one with one set of chromosomes).

Their is a two-step division cycle in meiosis. During the first round of cell division, homologue pairs divide, called meiosis I. During a second round, sister chromatids split, called meiosis II. As the cell division during meiosis occurs twice, one starting cell can produce four gametes (eggs or sperm). Cells pass through 4 stages in each round of division like prophase, metaphase, anaphase, and telophase. The cycle can be understood as follows:

<u>Meiosis I: </u> Before entering meiosis I, a cell must under go an interphase. The meiosis-I involve prophase-I , metaphase-I , anaphase-I  and telophase-I. The starting cell is diploid (2n=4)

  • during prophase-I homologous chromosomes pair-up and exchange fragments called as "crossing over".
  • during metaphase-I homologue pairs line up at the metaphase plate.
  • during anaphase-I homologues separate to opposite ends of the cells and then sister chromatids stay together.
  • during telophase-I the chromosomes reach at opposite poles of the cell and result each chromosome has two sister chromatides, non identical in nature.
  • Finally the newly forming cells are "haploid" i.e n=2.
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3 years ago
The oxidation of sucrose (sugar) into CO2 + H2O can occur quickly or slowly. Which of these modifications to the reaction is lik
BaLLatris [955]
<span>grinding the sugar into a fine powder</span>
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3 years ago
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