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Leviafan [203]
3 years ago
8

Which conditions are possible reasons for declining genetic diversity of a species?

Biology
1 answer:
maw [93]3 years ago
6 0

Answer: I would say inbreeding

Explanation:

Inbreeding can cause offspring to have impaired ability to survive and reproduce, as they can inherit harmful mutations. They have a lesser chance of survival than other individuals in their species who are not products of inbreeding.

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Why we used dyes when we prepare onion , human cheek eqithelium smears, and didn’t use it in cork and leaf epidermal cells smear
Ad libitum [116K]

Answer:

Explanation:

Staining is done for onion cells to visualize the cytoplasm of yellow and white onions because they are not pigmented. The staining of human cheek cells with methylene blue is necessary to stain the nucleus to get clear image of it under microscope because methylene blue binds to negative charge nucleic acids  

While for leaf epidermal cells smears, staining is not necessary as they are visible under light microscope without staining and they also have pigmented materials inside them such as chlorophyll chloroplast.  The cork cell is a non-living and have a cell wall whose structure is visible under light microscope.  

7 0
3 years ago
Read 2 more answers
Two different trees have been classified as Pinus pinea and Pinus nigra. Which of the following statements is correct?
wel
I think that the answer is c because they are both named pinus
5 0
3 years ago
In animals, carbon dioxide waste is exchanged for
LUCKY_DIMON [66]

Answer:

oxygen

Explanation:

  • Through the process of respiration , in lung the carbon dioxide from the blood is exchanged with oxygen.
  • The smallest dunctional unit if the lung is the alveoli
  • At this level the gases are exchange through the capillaries present close to the alveoli.
  • The concentration gradient ,meaning the greater amount of oxygen present in the lungs and greater amount of carbon dioxide in the blood creates a gradient that allow the movment of oxygen into the blood and carbon dioxide in the alveoli through the membrane .
  • Partial pressure created allows the easy movement .The carbon dioxide get into the trachea and expelled through nose and mouth.

3 0
3 years ago
Action and reaction forces are equal in _____but opposite in _____.
snow_lady [41]
C. When you take a step, the ground pushes back on your foot with the same amount of force. If it pushed back with less, your foot would go through the floor; if it pushed back with more, it would actually push your foot off the ground. But they're in opposite directions; your foot pushes down, while the ground pushes up.

Hope this helps!
5 0
2 years ago
Read 2 more answers
The picture below shows the skeleton of an extinct mammal.
IRISSAK [1]
The extinct animal is most similar to the bottom left due to the spinal similarities. The spine does not demonstrate a sigmoidal curve like the bottom right does. Answer would be bottom left.
5 0
3 years ago
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