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Dovator [93]
3 years ago
12

(( EARTH SCIENCE ))

Biology
1 answer:
balandron [24]3 years ago
7 0

A.  the evolution of the first air-breathing animals that could live on land

Explanation:

The event or set of events that is the most significant part of all the given options is that of the evolution of the first air-breathing animals that could live on land.

  • The geologic time scale records deep time.
  • It places events in order of their occurrence.
  • Geologic time scale extends from the time of the earth's formation present.
  • It preserves a record of land mark events that has shaped the earth.
  • The evolution of the first air-breathing animals that could live on land is a significant event that occurred millions of years ago and it is a significant part of the geologic time scale.

learn more;

Radiometric dating brainly.com/question/7022607

#learnwithBrainly

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Considering the body’s organization from atoms to organ systems, in which level of organization are proteins like collagen? Desc
storchak [24]

Answer:

According to the levels of organization in the body, the level of organization in which proteins, like collagen, are found is the molecular level, allowing the structural support and the performance of other essential functions.

Explanation:

Proteins are biological macromolecules, polymers of units called amino acids. These molecules belong to the molecular level of organization in living organisms.

The level of organization where proteins are found allows them:

  • <em>Form an essential part of cells.</em>
  • <em>Contribute to the construction of tissues and organs.</em>
  • <em>Participate in metabolic reactions, as enzymes. </em>
  • <em>Defense of the organism, in the form of antibodies.</em>
  • <em>Regulation of vital functions, forming hormones.</em>

Other functions of proteins are to integrate the cell membranes and perform transport function, to form receptors and to be an energy reserve.

7 0
4 years ago
How do the cells of the xylem compare to the cells of the phloem?
Sladkaya [172]

Answer:

Xylem transports only minerals and waters from the roots. Phloem transports food materials that are prepared by the green parts of the plants to other parts of the plant. .Xylem is the dead tissues at maturity, but no cell contents. Phloem is the living tissue, but not with the nucleus

Explanation:

7 0
3 years ago
What it's called when scientists explore the world around them
notsponge [240]

Answer:

1. Observe

2. Research

3. Geology

Explanation:

Hope this helped!

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Flammable materials, like alcohol, should never be used or dispensed near
Paha777 [63]
An open flame or burning flame
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4 years ago
The client with chronic kidney disease and congestive heart failure is weak and dyspneic. Lab work reveals a hemaglobin of 6.5 g
inysia [295]

Answer:

packed RBC

Explanation:

  • Packed red blood cells consist of red blood cells that are separated from the rest of the blood components and are used for transfusion.
  • When the hemoglobin of a person falls below 70–80 g/L (7–8 g/dL), then the person is usually transfused with packed RBC.
  • In the given situation, the client has chronic kidney disease and congestive heart failure and as a result of this, the hemoglobin levels of the client has fallen down 6.5 g/dL (65 g/L) and thus, there is an immediate need for the provider to perform a transfusion of packed RBC of appropriate blood type as RBCs are a carrier of hemoglobin in the body.
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