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zavuch27 [327]
3 years ago
12

The biosphere is the only one of Earth’s systems that contains life. Please select the best answer from the choices provided T F

Biology
2 answers:
denpristay [2]3 years ago
8 0
The answer is true. The biosphere is the only on of earth's systems that can contain life. If their was life on any other system they would die because of the air.
Makovka662 [10]3 years ago
6 0
The answer is True.

Among other biological component of the earth's system, Biosphere includes all the living organisms such as plants and animals. Other component such as lithosphere, atmosphere,hydrosphere, and all other spheres of the earth's biological system does not contain life forms.
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All plants are able to complete the process of Which means they are able to use energy from sunlight to make food
Andru [333]

Answer:

Photosynthesis

Explanation:

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3 years ago
According to al gore global warming is caused by ? List 4 causes
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Why is it important for geologists to use both relative and absolute ages to determine the age of rocks?
uysha [10]

Answer:

to help and determine the exact age of the rocks

Explanation:

The study of rocks strata is known as stratigraphy. It is useful and helps the scientist and the researcher to study the earth's crust and its past.

Scientist could age the rock using two methods. They are :

Relative ages

Absolute ages

Early scientist could determine the exact age of the rock of the earth's crust. They use to find the relative ages of the layers of the rocks and then determine how one rock layer is older or younger than the other. But with advancement and development of carbon dating, scientist could tell the exact age of the rocks found on the earth's crust.

The Scientists uses the relative as well as the absolute dating technique to date the rock layers. They organize the rock layers based on their age and scale from the oldest to the youngest on a geologic time scale. So an exact date of the rocks can be determine by using the two methods of relative age and the absolute age.

3 0
2 years ago
Determine whether each of the following is a characteristic of DNA, RNA, or both.
jenyasd209 [6]

Is single-stranded:  Characterizes especially RNA

Single-stranded or single-stranded defines a nucleic acid molecule (DNA or RNA) that is unmatched to another complementary molecule. It is therefore a single strand of nucleic acid.


Messenger RNA is single-stranded because it consists of a single strand and is not paired with another complementary nucleic acid strand. Nucleic acids paired with a complementary strand, such as genomic DNA, are called double-stranded because they are composed of two strands.


The presence of single-stranded DNA is a key to classifying DNA viruses. The first single-stranded DNA virus identified was a phage. The single-stranded nature of its genome made it possible to study the replication of DNA and to carry out the first sequencing experiments.


Contains nitrogenous bases: concern both of DNA and RNA.

Nitrogen bases, or nucleobases or even nucleobases, are nitrogenous organic compounds present in nucleic acids in the form of nucleotides in which they are linked to an ose, ribose in the case of RNA and deoxyribose in the case of DNA.


Contains uracil: concerns especially RNA.

Uracil (usually called "U") is a nucleic base (pyrimidine base) specific for RNA. It is found in this nucleic acid as nucleoside with uridine and nucleotide with uridine monophosphate or uridylate. While in DNA, adenine pairs with thymine (denoted "T"), it is uracil that binds to adenine in RNA by two hydrogen bonds.

Some authors hypothesize that the spontaneous deamination of cytosine in uracil, easily detectable in DNA (where U is not normally present) by the cell repair machinery of mutations, would explain the use of the base T in DNA. RNA (especially mRNA), a molecule regularly renewed in the cell, does not see its sequence controlled by repair systems, hence a conservation of the base U in this molecule. In this hypothesis, the base U is thus ancestral, the base T derived.


Contains adenine: concern both of DNA and RNA.

Adenine is an essential compound in the living. We find this molecule everywhere in the body, alone or arranged to several other different molecules, thus playing several roles. It is found in nucleotide form: in DNA it is dAMP for deoxyadenosine monophosphate or deoxyadenylate, and in RNA the AMP for adenosine monophosphate or adenylate, as well as in nucleoside form with deoxyadenosine and adenosine.


Is double-stranded: concern especially DNA.

A double-stranded double strand (db) is a molecule of D-deoxyribonucleic acid (DNA) or a molecule of double-stranded D-ribonucleic acid (RNA).


Double-stranded trait is a classification element of some DNA viruses.


It is not impossible to find double-stranded RNA (although it is rare).


Double-stranded RNA is an RNA composed of two complementary strands, in the manner of double-stranded DNA.


There are intracellular or extracellular double-stranded RNAs. Extra-cellular double-stranded RNAs are the genome of some viruses. For others of RNA (+) type, the replicase makes it possible to obtain a double-stranded RNA (tobacco mosaic virus) and thus to multiply. In eukaryotes, this type of RNA organization is involved in the initiation of the RNA interference process. Intracellular double-stranded RNAs are the essential components of the small subunit of the ribosome and therefore exist in a very large intracellular concentration. A high extracellular concentration of double-stranded RNA is synonymous with infection with a virus.


Is made of nucleotides: concern both of DNA and RNA.

Nucleic acids are macromolecules, that is, relatively large, relatively complex molecules. They enter the family of biomolecules since they are of great importance in the realm of life, "bios" meaning life in Greek.


Nucleic acids are polymers whose base unit, or monomer, is the nucleotide. These nucleotides are linked by phosphodiester bonds.


Pairing of adenine with thymine and guanine with cytosine in DNA. The hydrogen bonds are blue dotted.


Contains deoxyribose sugar: concern DNA only (hence its name deoxyribonucleic acid).

Deoxyribose, or more precisely 2-deoxyribose, is a deoxyazugar derived from a monosaccharide of five carbon atoms (pentose, of empirical formula C5H10O4), derived from ribose by loss of an oxygen atom at the 2 'hydroxyl, and therefore, it does not respond to the general formula of monosaccharides (CH2O) n. It is part of the DNA.


It is a crystalline and colorless solid, quite soluble in water. In its furanosa form (pentagonal ring) it is part of the nucleotides that constitute the chains of deoxyribonucleic acid (DNA).


4 0
2 years ago
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Identify the areas on the image where the force of repulsion is the last
zavuch27 [327]
We need a photo so I can give u an answer
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2 years ago
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