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Elina [12.6K]
3 years ago
13

A model that shows a single sequence of feeding relationships is called a

Biology
1 answer:
Mandarinka [93]3 years ago
7 0

Answer:

Food Chain

Explanation:

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How can a molecule that contains an atom of phosphorus be made radioactive using an unstable isotope?
AVprozaik [17]

Answer:

A radioactive (unstable) phosphorus isotope is made to replace a nonradioactive isotope of phosphorus in the molecule

Explanation:

Phosphorus has both unstable (radioactive) and stable isotopes. In any compound that contains phosphorus, the phosphorus atom present may be either a stable isotope of phosphorus or an unstable isotope of phosphorus.

However, if the molecule contains a stable nonradioactive isotope of phosphorus, it is possible to convert this isotope in the molecule to the unstable radioactive isotope by carefully carrying out exchange reactions in which the phosphorus isotope replaces the nonradioactive isotope in the molecule.

This is usually done in order to create radioactive tracers which are used to study chemical reactions and biochemical processes.

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2 years ago
What gas, found in cigarette smoke and automobile exhaust, blocks the transport of oxygen by hemoglobin in the blood?
Andre45 [30]
Hello There! ^_^

Your question: What gas found in cigarette smoke and automobile exhaust, blocks the transport of oxygen by hemoglobin in the blood..?

Your answer: Carbon Monoxide is the gas that is found in cigarette smoke and automobile exhaust, blocks the transport of oxygen by hemoglobin in the blood.

Hope this helps! :D








3 0
3 years ago
Write an Alternative Title for the Lesson 'This is Jody's Fawn'.
Lapatulllka [165]

Answer:

"This is jody's brown deer"

Explanation:

8 0
3 years ago
How many chromosomes are present in the human cell nucleus? *
77julia77 [94]

Answer:

I believe D

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4 0
2 years ago
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Dr. Burke is a vertebrate paleontologist. Which of the following is he most likely to study?
BigorU [14]

Answer:

Reptiles

Explanation:

Vertebrate paleontology covers everything from the tiny, fish-like creatures, to the salamander-like ancestors of all land vertebrates, to dinosaurs, mammals, flying and swimming reptiles, etc.

Hope this helped

3 0
3 years ago
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