Answer:
A (-7)/(1)
Explanation:
(-7)/(-1) would be a positive 7.
7/1 would be a positive 7.
(-7)/(0) would be 0.
Answer: Nitrogen-fixing Bacteria
Explanation:
In the Nitrogen cycle, nitrogen fixing bacteria are very important in ensuring that plants get nitrogen to enable them grow and as animals have to eat plants, these bacteria are essential for our survival as well.
Plants are unable to use atmospheric nitrogen but nitrogen-fixing bacteria are able to synthesize ammonia from atmospheric nitrogen. They can then convert this to Nitrites and Nitrates which are more useful to plants and animals by extension.
Amniocentesis is a freshly established test for identifying fetal duchenne's muscular dystrophy.
<h3>What is tested for during an amniocentesis?</h3>
Amniocentesis is a test that may be recommended to you during pregnancy to determine whether your unborn child has a chromosomal or genetic disorder like Down syndrome, Edwards syndrome, or Patau's syndrome.
<h3>What exactly does an amniocentesis entail?</h3>
A little sample of amniotic fluid is removed during an amniocentesis operation for testing. This is the fluid that a pregnant woman's fetus is enclosed in. The amniotic fluid shields the fetus from harm and is transparent and pale yellow in color. provides infection protection.
<h3>What takes place after a positive amniocentesis test?</h3>
If the test yields a positive result, the fetus may have the genetic disorder. To confirm this, more testing are sometimes required.
learn more about muscular dystrophy here
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I believe that B is the answer. There are actually multiple disadvantages to using solar energy including the lack of reliablility, the amount of resources needing to be used to create solar panels, and even the lack of energy when there is no sun.
The reduced dependence on fossil fuels is an advantage and the same is involved when it comes to choice C. It is also important for it to become a renewable source so there isn't a lack of needed resources.
