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Mila [183]
3 years ago
13

PLZ HURRY IT'S URGENT!!!!

Biology
2 answers:
Whitepunk [10]3 years ago
8 0

The testbook answer is C. The marble moved 30 cm north in 6 seconds

Alla [95]3 years ago
6 0

a because the marble changed its position quickly meaning that it was in motion

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Which of the following organic molecules is a source of carbon, nitrogen, and phosphorus
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Petroleum, and carbon. It's an organic thing and has the sources provided.

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How does cell technology affect government? 4 New government agencies must be created to fund and regulate each type of technolo
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The correct answer for the question that is being presented above is this one: "2 Discoveries that are made through cell technology sometimes result in new regulations." Cell technology affect government through d<span>iscoveries that are made through cell technology sometimes result in new regulations.</span>
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4. For your organ system, describe how the system works at the tissue level. mine is the digestive system
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Different systems<span> of the body have different functions. For example, your </span>digestive system<span> is responsible for taking in & processing food, while your </span>respiratory system—working<span> with your</span>circulatory system<span>—is responsible for taking up oxygen and getting rid of carbon dioxide. Hope this helps</span>
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4 years ago
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What three processes lead to variation among offspring that have the same two parents?
beks73 [17]

Explanation:

Genetic variation in offspring during sexual reproduction is caused by

  • crossing over
  • independent assortment
  • randomized fertilization

Further Explanation:

All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wound around histones as chromosomes. To produce daughter cells during cell division, the chromosomes (total number of chromosomes (2n)) are copied before the cell splits into two daughter cells. This process is known as mitosis, and occurs in cell division and growth processes. Two new nuclei are formed, along with identical cells. These are the same as the parent cell and the chromosome number (2n) is maintained.

Conversely in meiosis, the number of chromosomes (2n) is halved through meiotic divisions, producing 4 (n) germ cells (sperm or eggs), each containing half the number of chromosomes as its parent cell.

  • crossing over:  the exchange of segments of chromosome, between non-sister homologous or similar chromatids crossing over happens at chiasmata, the point where non-sister chromosomes are joined.
  • independent assortment in metaphase I of meiosis: chromosomes align independently and genes segregate independently into new combinations ...in humans 2n, n = 23, 8 million combinations of chromosomes possible
  • randomized fertilization: sperm cells fertilize an ovum to form a zygote. This occurs randomly by chance, to result in a complete set of chromosomes 2n, that is a novel combination of half each parent's number of chromosomes

Learn more about mitosis at brainly.com/question/4303192

Learn more about transcription at brainly.com/question/11339456

Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316

#LearnWithBrainly

9 0
3 years ago
How have the factors that trigger an asthma attack changed since the 1900s? As a researcher, how would you put together the clue
eduard

so if you look up things that can cause an asthma attack it will also show that viruses and bacteria are a cause. with asthma you lungs could already be inflamed as well as your air way wich makes it harder to breath. when you have c-19 it will inflame your lungs even more so it makes it even harder to breath given an asthma attack. more asthma attack now are probably caused by c-19 because it is all over the place and the percent of asthma attack by virus has dramatically increased.

4 0
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