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Sergeeva-Olga [200]
3 years ago
12

After a volcano erupts and destroys an ecosystem, a few organisms are able to begin growing from the decaying organic matter lef

t behind. What do we call those organisms that are able to grow in little or no soil that first appear?
Biology
1 answer:
Yanka [14]3 years ago
5 0

Answer:Pioneer species

Explanation: Pioneer species are the first species to live in an area after it has been destroyed as mentioned.

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Answer:

Sister chromatids separate.

Explanation:

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(03.05 hc) the base pairs in a dna strand are held together with hydrogen bonds. if the two nitrogenous bases in each pair were
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The cell would have to take in and use more energy in order to break the covalent bonds.

The correct option is B

Hydrogen bonds :

are the chemical mechanism that governs the complementarity of the bases of DNA. This correspondence is unique thanks to the geometry of the hydrogen donor atoms and the acceptors that form the bases.

The (hydrophobic) bases are stacked inside the double helix of DNA; their plane is perpendicular to the axis of the double helix. The outside (phosphate and sugar) is hydrophilic.

The hydrogen bonds between the bases of one strand and the bases of the other strand keep the 2 strands united.

One purine on one strand necessarily binds to a pyrimidine on the other strand. As a corollary, the number of purine residues is equal to the number of pyrimidine residues.

* A binds to T (by 2 hydrogen bonds).

* G binds to C (via 3 hydrogen bonds: more stable bond: 5.5 kcal vs 3.5 kcal).

What part of the DNA strand do hydrogen bonds hold together?

hydrogen. Covalent bonds occur within each linear strand and strongly bond the bases, sugars, and phosphate groups (both within each component and between components). Hydrogen bonds occur between the two strands and involve a base from one strand with a base from the second in complementary pairing.

Learn more about DNA strand:

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2 years ago
Kynndal had just turned two years old. She was a Daddy's girl who loved to help her Dad wash his motorcycle. She could often be
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The steps of fracture repair include:

  • Hematoma formation.
  • Fibrocartilage Callus Formation.
  • Bony Callus Formation.
  • Bone remodeling.

<h3>What is a fracture?</h3>

A fracture is a complete or partial break in a bone. The causes of bone fractures include trauma, overuse, and diseases that weaken bones.

In this case, Kyndall was lucky because the fracture occurred about 3 inches below the epiphyseal plate as this means the fracture does not break through the bone at the growth plate.

An improperly treated growth plate fracture could result in a fractured bone.

Lastly, the type of fracture is a nondisplaced fracture is one in which the bone cracks or breaks but retains its proper alignment.

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3 0
2 years ago
"Based on the information provided in the graph, the process that is occurring is
svp [43]
By studying the graph and the information given, you can tell that the process that is occurring is ecological succession. This is when ecosystems change over time and develop more over longer periods of time. The correct answer is number 1. 
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