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3 years ago

What is meant by the notion of a critical period for language acquisition?

1 answer:

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In childhood for many organisms, there is a "critical period," which is when important learning of certain skills occurs.

The critical period of language learning is a period in the first few years that is crucial for learning a language (language acquisition). After this period, it becomes harder and harder to learn a new language. This is why some immigrants that immigrate later in their lifetime struggle to completely grasp a new language.

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Mandarinka [93]

Carbon dioxide and water are the products of cellular respiration and the reactants of photosynthesis.

3 0

3 years ago

What are the four basic characteristics that result in natural selection? Explain how bacteria encountering an antibiotic exhibi

hodyreva [135]

Answer:

Explanation:

1) Four characteristics that results in natural selection are: 1)reproduction,

2)heredity,

3)variation in fitness

4)variation in individual

Antibiotic resistance of bacteria can not be described as instance of evolution but as a kind of variation arround some kind of bacteria.

Antibiotics refers to substances that are secreted by bacteria and fungi to destroy other bacteria that can be competing for small nutrients with them.this substances is used in treatment of people today

Some bacteria have become resistant to antibiotics by different type of alterations as well as mutations, in each their DNA.

Bacteria that are resistant to modern antibiotics has been detected in dead bodies that has been frozen before the discoveries of the antibiotics

Bacteria can become resistance by these different ways such as;

1. Through mutation

2) through Gene transfer( DNA swapping

An antibiotic kills a bacterial cell by simply disrupting a critical function. This is achieved in the cell in much the same way that a saboteur can cause a massive jetliner to crash by simply cutting the hydraulic lines.

2) Antibiotic cycling refers to process in which antibiotic heterogeneity takes place.it is a method use in ICU where the emergency of resistance that takes place because of small antibiotics class is reduced.

3)Carl's modeling evolution is found in antibiotic resistance process, modelling of new human pathogens, especially HIV. He also model on how evolution of pathogens is affected by immune system . modeling gives room to make predictions about evolution.

4)Some experiment were conducted by Charles Darwin to support hypothesis of evolution, such experiment included phototropism also insectivorous nature of Drosera.

5)The Main benefit of using

computer model to test an idea instead of an experiment are to do the thorough Study the behavior of a system even you haven't build it. The results from the simulation is usually accurate when , compared to analytical model. It is very simple to perform and helps to detect un-expected phenomenon about the system

5 0

3 years ago

A surgical client is receiving a neuromuscular junction (nmj) blocker. the nurse knows that the client cannot move because the c

Hunter-Best [27]

The patient is receiving succinylcholine or commercially called anectine.
Succinylcholine is a medication often used in the context of general anaesthesia and its main effect is general paralysis. The drug's mechanism of action includes the inhibition of the acetylcholine's action on skeletal muscles. This inhibition is caused by the binding of the drug on the nicotinic acetylcholine receptor and the depolarization of the muscle cell.

6 0

4 years ago

What sediment would have high permeability , what would have low permeability

Lana71 [14]

Answer:

Explanation:

Well sorted sediments, evenly distributed sediments of uniform size, typically contain 26% to 48% open space. ... Thus, well sorted sediments have higher porosity while poorly sorted sediments have low porosity. Permeability refers to how easily water passes through sediments and rock.

4 0

4 years ago

Read 2 more answers

Describe the formation of tissues fluid and lymph

defon

As fluid enters the tissue space from the blood stream pressure builds up in this space and as this hydrostatic pressure increases it causes the interstitial fluid to diffuse into the lymphatic capillaries once the interstitial fluid has entered the lymphatic capillaries it is called lymph

8 0

3 years ago

Read 2 more answers