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Alona [7]
3 years ago
9

All the finches charles darwin observed on the galapagos islands

Biology
2 answers:
Black_prince [1.1K]3 years ago
7 0

It's B. Shared a common ancestor.

Julli [10]3 years ago
3 0
C) They had 2 different kinds of beaks, 1 kind was for foraging plants, the other for hunting insects.
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What would happen to an organism if mitosis did not occur? Check all that apply.
vitfil [10]

The correct options are:

The organism would not grow.

If an organism were cut or burned, the damaged area would not heal.

The organism would not produce new cells.

The mitosis is essential for the division of the cells. The division of the cells allow the organism to grow and heal the damaged cells. The division of the cells replace the old cells and multiply the number of the cells in an organism. hence, in any condition, the organism would be affected and in the absence of the mitosis, the organism cannot heal and cannot grow, due to non-production of new cells.

3 0
3 years ago
Read 2 more answers
"DNA denatures at a higher temperature than does protein, yet its structure depends on relatively weak hydrogen bonds. Why the d
Reika [66]

The option are not given and the options are:

Proteins are denatured by breaking covalent bonds.

Linear molecules like DNA are inherently stable.  

Individual hydrogen bonds may be weak, but DNA structure is stabilized by many thousands or millions of these bonds - far more than found in proteins.

The statement is incorrect; it actually takes far more energy to denature proteins than it does to denature DNA.

Answer:

The correct answer is- Individual hydrogen bonds may be weak, but DNA structure is stabilized by many thousands or millions of these bonds - far more than found in proteins.

Explanation:

Proteins become denatured when it looses its three-dimensional structure. Disulfide bond and hydrogen helps in stabilizing the three-dimensional structure of proteins and if these bonds break due to any factor protein lost its structure and function.

DNA is made up of a large amount of hydrogen bond because in AT base-pairing two hydrogen bonds are required and in GC base pairing three hydrogen bonds are required. Therefore it can be concluded that as more hydrogen bonds stabilizes DNA than protein its melting temperature is higher than protein.

3 0
3 years ago
How are feral cats threatening the existence of nearly 100 species in Australia?
ankoles [38]
Feral cats threaten<span> the survival of over </span>100<span> native </span>species in Australia<span>. They have caused the extinction of some ground-dwelling birds and small to medium-sized mammals. </span>
3 0
3 years ago
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A b or c or d please help
Xelga [282]

It would be B. the mixture became warm, as a change in temperature is certain evidence that a chemical reaction has taken place.

7 0
3 years ago
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Memory can be improved by using a variety of techniques. Describe each of the techniques listed below and explain its use throug
Aliun [14]

Answer: EDG

Explanation:

First, effortful processing is encoding that requires attention and conscious effort. This would be something like studying where you store facts in your mind for use later. Automatic processing on the other hand, is unconscious encoding of incidental information and of well-learned information. For example, I know what someone means immediately if they say it's noon. As for chunking, it is organizing items into familiar, manageable units. One perfect example would be my phone number. There are many different numbers, but its easier to manage when some are grouped together. Then there are mnemonics which are memory aids, especially those techniques that use vivid imagery and organizational devices. For example, I use the first letter technique (PEMDAS) to help me when solving math problems. Spaced or distributed practice is studying or processing with breaks to help understand concepts. For example, when I study, I take a five minute break every 20 minutes to help my brain cool down and be ready to learn more. Now, deep processing involves elaboration rehearsal which involves a more meaningful analysis. For example, giving meaning to different words or images and making them relatable.

6 0
3 years ago
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