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Keith_Richards [23]
3 years ago
15

The photograph shows soil layers in a grassland. the upper layer is a band of

Biology
2 answers:
ozzi3 years ago
8 0

Answer: subsoil B

Explanation:

Don't really have one, I just know what it is!

Dovator [93]3 years ago
8 0

The correct answer is B. Subsoil

Explanation:

Soil is divided into multiple layers or horizons, this includes the topsoil that is the surface layer we know, this layer is dark and in it, it is possible to find plants including its roots and animals such as worms. This is the darkest layer show in the picture. This layer is followed by the subsoil which is lighter in color and harder, this is the lighter-colored band of the picture and the correct answer. Finally, is the bedrock and other layers made of rock that is usually gray, also this layer is the hardest one.

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Kitty [74]

Answer:

The instruments that is being used to care for the instrumentation and supplies that have been exposed to the inside of intestinal tract are kept aside from the other sterile instruments.

The instruments are kept aside to protect the other instruments from being contaminated by it.

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So, the instrument that is used once are kept separated.

6 0
3 years ago
Why might fish exist before amphibians?
Daniel [21]

Answer:

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6 0
3 years ago
molecules are attracted to one another by van der waals forces. how do van der waals forces compare with ionic and covalent bond
vitfil [10]
<h2>Answer:</h2>
  1. Ionic bond: It is the bond  formed by the complete transfer of electron from one atom to an other atom.
  2. Covalent bond: It is the bond formed by the mutual sharing of the electrons.
  3. Van der waal: These are weak interactions between one molecules with other polar or non polar molecules to hold to each other by weak force of attraction.
<h2>Explanation:</h2>
  • <u>Similarities between van der waal, ionic bonds and covalent bonds:</u> All of them are a type of inter-molecular forces, in which ionic bonds are stronger than covalent bond and van der walls forces. And covalent bonds are stronger than van der wall forces.
  • <u>Difference between van der waal and ionic bonds:</u> Ionic bonds are formed by complete transfer of electrons from one atom to an other atom. Covalent bond are formed by sharing of electrons while in van der waal, there is a slight attraction when oppositely charged molecules come close to each others.

Result: Van der wall forces are weakest among ionic and covalent bonds.

7 0
4 years ago
What must be present in order for natural selection to occur in a population?
Otrada [13]

Answer:

adaptation

Explanation:

8 0
3 years ago
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3 years ago
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