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Alexus [3.1K]
2 years ago
10

The variations in the features of the tortoise populations on Albemarle and Abingdon islands are examples of __________.

Biology
2 answers:
kotegsom [21]2 years ago
8 0

Answer:

natural selection.

Explanation:

Igoryamba2 years ago
7 0

Answer:

b

Explanation:

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In animals, nitrogenous wastes are produced mostly from the catabolism of ________. phospholipids and glycolipids proteins and n
guapka [62]

Answer:

<u>Option-</u> "Proteins and Nucleic acid."

  • In animals, nitrogenous wastes are produced mostly from the catabolism(break down of macro molecules into simpler ones) of <u>Protein molecules. </u>

Explanation:

  • <u> Proteins and nucleic acids:</u>

Most of the organisms ingest different types of materials. And some of them are proteins which are composed up of different amino acids, as the proteins are important in many ways, they help in cells reproduction and growth etc.

And the nucleic acids are important polymers, which are required for carrying the operation of genetic material from one cell or being to another.Or it may occur simply from one generation to another in the form of RNA and DNA.

<u>Why they are broken down?</u>

Both the polymers consists the Nitrogen atom as the main constituent in there molecular structure, so that is why the break down of these materials results in the form of nitrogenous materials.

  • When proteins level exceeds from a certain level they need to be controlled and thus required the excessive materials to be excreted from the body. There are different forms or levels of the nitrogenous waste products which are excreted from an animal body. As there levels of organisms excrete them in different forms,which are as below:
  1. <u>Beings living on land and Marine Fish:</u> The nitrogenous waste is excreted mostly in the form of urea or uric acid, but mostly in the urea which is just because they have an optimum level of water as the solvent.Along with that the marine fish can also excretes the nitrogenous waste in the form of trimethylamine oxide.
  2. <u>Ave's(Birds):</u>Birds have a less availability of water in there body which makes them to excrete the nitrogenous waste product in the form of uric acids.
  3. <u>Freshwater Fish:</u> They excrete the amount of nitrogenous waste from the body in form of ammonia, as they have an abundance of water as solvent. While, there is an abundance of water in the environment, which they are able to dissolve the amount of nitrogenous waste products present inside the body and excrete it in the form of ammonia. Which is less toxic form of the nitrogenous waste materials.
4 0
3 years ago
List the 4 abiotic forms of nitrogen cycle and the chemical formula
weeeeeb [17]

Answer:

Four abiotic forms of nitrogen cycle and its chemical formula

Ammonium – NH^{4+}

Ammonia – NH^3

Nitrite – NO^2

Nitrate – NO^3

Explanation:

Ammonium: In the nitrogen cycle ammonium is starting point that is present in soil and are converted to various forms by different process.

Ammonia: In the process of nitrogen fixation, the bacteria having nitrogenase enzymes reacts with the nitrogen as well as hydrogen and produces the ammonia, which is further converted to organic compounds.

Nitrite: The nitrosomonas bacteria present helps in conversion of nitrogen gas into nitrite.

Nitrate: Again the Nitrite is converted into Nitrate by the nitrobacter. During the process of assimilation ammonium and nitrate are absorbed by the plants.

8 0
3 years ago
According to Charles Darwin what is one reason that not all organisms survive in nature?
Inessa05 [86]
According to Charles Darwin what is one reason that not all organisms survive in nature? 
<span>B. There are more organisms born than resources can support.</span>
3 0
3 years ago
Match the organ to the number showing the order of blood flow in the circulatory system.
seraphim [82]

er:

Explanation:

In the lungs CO2 is removed from the blood and send out the body where we exhale

5 0
2 years ago
Justin was involved in an automobile accident and sustained a serious injury to his head. when asked about the accident, justin
Arlecino [84]
The answer to this question is the "Retrograde Amnesia". When Justine was involved in an automobile accident and sustained a serious and critical injury to his sensitive part of the body which is the forehead. When he is being asked about the accident, Justin could not remember what happened on how the accident occurred. So Justin seems to be suffering from  RETROGRADE AMNESIA.
4 0
3 years ago
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