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zavuch27 [327]
3 years ago
9

What conditions make for a violent volcanic eruption? A. Magma with low gas content OB. Magma with low viscosity O C. Magma with

high silica content OD. Magma that can flow easily​
Biology
1 answer:
spayn [35]3 years ago
4 0

Answer:

A and B

Explanation:

the main factors that result in violent volcanic eruption is low viscosity and gas content

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What part of the plant is found at the tip of the pistil and receives pollen?
Murljashka [212]

Answer:

Your answer is Stigma.

Explanation:

The stigma is the sticky knob at the top of the pistil. It is attached to the long, tubelike structure called the style. Hope this helped :)

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Autotrophs produce food through what process?
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Autotrophs use photosynthesis to feed itself. An autotrophs is a plant that provides for itself and does not need to prey among other animals.
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Describe the potential effects when a keystone species is removed from a community.
Vlad [161]

Answer:

Explanation:

A keystone species is the one which plays an important role in maintaining the structure of the ecosystem. On the keystone species many other species of the ecosystem are dependent upon.  

The potential effects associated with the keystone species includes the following:

1. No other species will be capable of filling the same ecological niche. Hence, the dependent organisms will suffer and the ecosystem will change drastically.

2. The ecosystem will be populated by the invasive species which will affects the population of native species.

5 0
3 years ago
Help asap please!
andreyandreev [35.5K]

Answer:

Active transport:

  • requires energy
  • molecules move from low to high concentration sides
  • Na+ and K+ move by active transport

Simple diffusion:

  • molecules move from high to low concentration sides
  • molecules pass between lipids
  • small non-polar and polar molecules

Facilitated diffusion:

  • molecules move from high to low concentration sides
  • involves channel proteins
  • move large molecules

Explanation:  

  • Simple Diffusion is the pathway of only small molecules that freely move through the membrane by momentary openings produced by the lipids' movements. Diffusion is a slow process that requires short distances and pronounced concentration gradients to be efficient. An example of diffusion is osmosis by which water is the transported molecule.
  • Facilitated diffusion is the transport of hydrophilic molecules that can not freely cross the membrane. Channel protein and many carrier proteins are in charge of this transport. When uncharged molecules cross the membrane, they do it according to their concentration gradients, going from the more concentrated side to the lower concentrated one. When ions need to cross the membrane, the process depends on an electrochemical gradient.  Glucose is an example of a hydrophilic protein that gets into the cell by facilitated diffusion.

Simple diffusion and facilitated diffusion are both passive transport processes because they only depend on electrochemical gradients, so they do not need any energy to occur.

  • Active transport is the transport of molecules that move against the electrochemical gradient, so it does need energy to happen. Molecules move from the lower concentration side to the higher concentration side of the membrane. Carrier proteins are in charge of active transport. The needed energy might proceed from the ATP molecules or the membrane's electric potential. An example of molecules moved by active transport are the Na and K.

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2 years ago
What chemical helps to regenerate ATP
kaheart [24]

creatine phosphate is the chemical that helps to regenerate ATP

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