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Arturiano [62]
3 years ago
5

Which factors improve soil fertility? Select the three correct answers.

Biology
1 answer:
Andrej [43]3 years ago
6 0
A.Nitrogen
B.Humus
c.Manure
hope this helps
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What is NOT an impact that an invasive non-native species has on an ecosystem?
Elza [17]

D) increases reproduction of native species

Explanation:

Non-invasive or non-native species or exotic species do not increase the reproduction rate of native species.

In fact, studies have shown that they reduce the rate of reproduction of the native ones.

  • Invasive species where they are successful are huge threat to the stability of an ecosystem.
  • Some invasive species are capable of destroying habitats by substituting for their functional roles.
  • They compete with native species. In some cases, where an invasive specie is a predator, it preys on the native ones.
  • Invasive species are capable of destroying the food source in an ecosystem.

learn more:

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Which ope of cell does the strainer best model?
Nina [5.8K]

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Explanation:

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10) Why do viruses need living hosts, such as bacteria or eukaryote cells? A) The host cell is the source of food for the virus.
bija089 [108]

B.) is 100% correct

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What structure of the sarcomere shortens during muscle contraction?
LiRa [457]

Answer:

The Z lines and H- zone shortens during the muscle contraction.

Explanation:

Sarcomere is the area between the two Z lines. The Z- lines are present in the centre of I - band and H - zone is present in the A - band. The actin filaments which are thin filaments present in I- band and contracts, slide over the myosin filament during contraction.

The I - band, H- zones are became shortens as they are thin than the A- band. It is anisotropic band having thick myosin filaments. They are not flexible and remain in its constant shape during the muscle contraction.

After the muscle contraction, the A- band and the H- zone comes to their original shape. In other words, the sarcomere shortens and comes back during muscle contraction, and relaxation.

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Part 3? i dont know ok see ya
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4 0
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