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Gemiola [76]
3 years ago
11

Which of the following groups is present in amine compounds? A) COOH group B) PO4 gropu C) NH2 group

Biology
2 answers:
kap26 [50]3 years ago
8 0

Answer:NH2 group

Explanation:

The NH2 group, is the group that conform the amines groups. Also, in organic chemistry, this gruop is the base and in the most common reactions works like that, for example:

R-COOH + R'-NH2 ---> RCOO-NH-R' +H2O

The amine group reacts with carboxylic group and produce a salt and water

Mkey [24]3 years ago
7 0
I think the correct answer from the choices listed above is option D.It is the NH2 group that is present in amine compounds. Amines<span> are formally derivatives of ammonia, wherein one or more hydrogen atoms have been replaced by a substituent such as an alkyl or aryl group.</span>
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D

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How do melting ice caps and glaciers affect sea level
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If the ice is lying on land, melting ice will slowly raise sea levels.  

Explanation:

Ice in the Arctic ocean is floating on the ocean and so when it melts it does not raise sea levels anymore - its like ice cubes in a drink - its already displaced as much water as its going to.

However, the big ice caps of Antarctica and Greenland are mostly lying on land and so as they melt they add more water to the oceans and the average sea level rises.

If all the ice in Greenland were to melt the sea level would rise by about 7 meters which would flood out millions of people living in coastal cities. If all the ice in Antarctica were to melt, this would add 72 meters to average sea levels.

Right now, thermal expansion of the oceans, plus melting ice from continental alpine glaciers, is contributing the most to sea level rise (as the atmosphere warms from global warming, some heat is transferred to the oceans). Current estimates are that sea levels may rise as much as 1 meter (3-4 feet) by the year 2100.

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The main type of evidence the scientists used is fossils.
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8 0
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The growth of a population of sparrows accelerates with each generation. the chances of dying are about the same for these sparr
Paladinen [302]

Answer:

Exponential growth and a type II survivorship curve

Explanation:

  • Firstly we need to understand what exponential growth is, it is the type of growth in which population of any specie increases at a tremendous rate, constantly. In this type of growth, the increase is an exponential function of time for example, 2 reproduce to form form, four to sixteen and so on.

Population survivorship curves are simply the graphs representing increase in population with respect to time. There are three types of population survivor ship curve, Type I, Type II and Type III.

  • <u>In Type II survivorship curve,</u><u> </u>there is a constant dying rate of individuals of population with respect to time.

Now lets come back towards question, where two characteristics of the population are mentioned,

  1. Exponential growth of a population of sparrows with each generation.
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<em>This clarifies that </em><u><em>Exponential growth and a type II survivorship curve</em></u><em> is the best option representing the said scenario.</em>

<em />

Hope it help!

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