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exis [7]
3 years ago
11

What is the name of the middle portion of the leaf?

Biology
1 answer:
sdas [7]3 years ago
6 0
Either the veins or the internal stem
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The image shows the Great Rift Valley in Africa, an example of a rift valley.
schepotkina [342]

Answer:

The rift valley formed when the crust pulled apart.

Explanation:

The statement that best describes how the Great Rift Valley in Africa formed is that they formed when the crust pulled apart.

  • This is geologically known as divergence.
  • The Arabian plate and the Nubian/Somali plate are divergent plates.
  • They are currently moving apart and away from each other.
  • This creates a crack on the earth which is what formed the rift valley in Africa.
  • Along such margins, earthquake activities are prominent.
7 0
3 years ago
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Which one of these is NOT an example using facilitated diffusion?
Lina20 [59]

Answer:

C. "Using the sodium-potassium pump involves the hydrolysis of ATP and the

release of Nat to the outside of the cell."

Explanation:

The use of a sodium-potassium pump is a form of active transport, not diffusion. It also requires energy because the pump moves ions against their concentration gradient (low to high), unlike diffusion.

6 0
3 years ago
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Decomposers are important because they​
eimsori [14]

Answer:

Decomposers and scavengers break down dead plants and animals. They also break down the waste of other organisms. Decomposers are very important for any ecosystem because if they weren't in the ecosystem, the plants would not get essential nutrients, and dead matter and waste would pile up.

Explanation:

8 0
3 years ago
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A universal genetic code allows for which of the following?
katrin2010 [14]
A universal genetic code allows "the processes of transcription and translation to produce the same proteins in all species."
To say that the genetic code is universal it means that it is read/interpreted in the same exact way in all cells. This is that the same group of three nucleotides, a codon, will always translate into the same amino acid in any cell leading to the formation of the same protein, or at least a protein with same amino acids when first formed. 
4 0
4 years ago
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How is the blackjack seed suited to its method of dispersal?
soldier1979 [14.2K]

Answer:

Seeds are widely dispersed through the fruits hook-like bristles that embed themselves in clothing and the fur of mammals and feathers of birds. They are also spread by wind, water and soil.

Explanation:

3 0
3 years ago
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