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Mariana [72]
3 years ago
14

Hey I need help and only the correct answer!!!!!!!!

Biology
2 answers:
Agata [3.3K]3 years ago
8 0

Answer:xckv c;kvjnd;ibs;dfjk ;adjkfvba;dfjbv;jkdfvbafv;kaxjfvbx;kjvbpfhjonsvjbvkjdfbvpdsfubdfv[diufbdfskubvd[foubvdfidfoahdfv;'lxckvnc;lkbnscl;v bs;djvb sc;jdfbvfkulgfd;udfg

Explanation:

krok68 [10]3 years ago
3 0

Answer:

the answer is D

Explanation:

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Limestone formations in caves are considered what kind of weathering
madreJ [45]

Answer:

Chemical weathering

Explanation:

Caves are formed by the dissolution of limestone. Rainwater picks up carbon dioxide from the air and as it percolates through the soil, which turns into a weak acid. This slowly dissolves out the limestone along the joints, bedding planes and fractures, some of which become enlarged enough to form caves.

Chemical weathering involves the decomposition of rocks due to chemical reactions between minerals such as calcite with water and gases in the atmosphere (e.g. carbon dioxide and sulphur dioxide). The solution of soluble minerals is particularly important in limestone landscapes.

Solutional caves or karst caves are the most frequently occurring caves. Such caves form in rock that is soluble; most occur in limestone, but they can also form in other rocks including chalk, dolomite, marble, salt, and gypsum.

Essentially, water reacts with carbon-dioxide to form carbonic acid. It then seeps slowly through the roof of the cave, depositing calcium carbonate, which hardens and builds up over time to form a stalactite.

7 0
3 years ago
From a chemical view, how is an amino acid is being recognized by its specific aminoacyl tRNA synthetase?
nydimaria [60]

Answer:

An aminoacyl-tRNA synthetase (aaRS or ARS), also called tRNA-ligase, is an enzyme that attaches the appropriate amino acid onto its corresponding tRNA. It does so by catalyzing the transesterification of a specific cognate amino acid or its precursor to one of all its compatible cognate tRNAs to form an aminoacyl-tRNA.

5 0
3 years ago
RNA synthesis is always 5' to 3' because: A. the unwinding of the double-stranded DNA can only move one direction B. the structu
avanturin [10]

Answer:

The correct answer is option E. "nucleotides can only be added to an available 3'-OH group on the transcript terminus".

Explanation:

RNA synthesis is catalyzed by an enzyme called RNA polymerase. RNA polymerase always catalyze the synthesis of new RNA from 5' to 3' because nucleotides can only be added to an available 3'-OH group on the transcript terminus. This has been confirmed in labeling experiments with γ-32P substrates which establish the presence of a triphosphate moiety in transcripts with either pppG or pppA.

7 0
3 years ago
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Based on the diagram, which three consumers all get their energy from the same producer?
LiRa [457]

Answer:

The squirrel, robin, and field mouse

Explanation:

A producer is what gets its energy directly from the sun (usually a plant) and the squirrel, robin, and field mouse all eat the plant seeds, which get energy from the sun .

5 0
3 years ago
Which of the following statements is not true?
Anastasy [175]
I would think its B but im not positive
7 0
3 years ago
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