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GarryVolchara [31]
3 years ago
9

Geographers identify four major kinds of plant life in the united states and canada: tundra, grassland, desert scrub, and what.

Biology
1 answer:
gladu [14]3 years ago
7 0

The answer is forests. A forest is dominated by trees and in a large area. Precisely hundreds of more definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing and ecological function. 

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Which of the following functions does the myelin sheath perform for a nerve cell?
Ira Lisetskai [31]

Answer:

a. insulation  

Explanation:

The myelin sheath provides increased cell isolation (increased membrane resistance) because there are no membrane leakage channels in which there is myelin.

In addition to no membrane leakage channels, there is also virtually no type of membrane channel when there is myelin sheath (eg sodium and potassium pumps), which causes the cell a lower need for protein synthesis, or that is, less energy expenditure.

8 0
3 years ago
What is the amino acid sequence for the mRNA strand CACCCAUGGUGA?
krek1111 [17]

Answer:

Histidine- Proline- Tryptophan- Stop codon

Explanation:

The mRNA strand in the question is produced as a result of a process called TRANSCRIPTION. However, the mRNA transcript is further used to synthesize an amino acid sequence in a process called TRANSLATION. The mRNA sequence is read in a group of three nucleotide bases called CODON.

Each codon specifies an amino acid which is represented in the GENETIC CODE. In this case, a sequence of mRNA strand is given as: CACCCAUGGUGA

The following codons in the sequence specify the following amino acid:

CAC - Histidine

CCA - Proline

UGG - Tryptophan

UGA - Stop codon

Hence, the amino acid sequence encoded by the given mRNA strand is Histidine- Proline- Tryptophan- Stop codon.

N.B: After a stop codon (UGA, UAA, UAG) is encountered, the translation process stops.

8 0
2 years ago
Based on the diagram above, which organism will have the greatest physical difference from its ancestor?
choli [55]

Answer:lobsters

Explanation:Because they are farther removed

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3 years ago
HELP PLEASE!!!
Shkiper50 [21]
The correct answer is B) Prairies wind erosion usually happen in deserts and coastal sand dunes and beaches, certain land conditions will cause wind erosion in agricultural areas.
4 0
3 years ago
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Which of the following is not an organic molecule?
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Water is not a organic molecule
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3 years ago
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