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Anna007 [38]
3 years ago
7

What are the sources of oxygen for aerobic respiration

Biology
1 answer:
Mashcka [7]3 years ago
4 0

Answer:

Oxygen comes from the lungs and blood carries the oxygen to body cells. (Blood flow or circulation).

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Our DNA is around 70% the same as a slugs DNA.
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Identify an appropriate control that the researchers should use when they study the growth and photosynthetic ability of the pla
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The plant should remain the same
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Which of the following ideas is supported by Darwin's observation of local variation among tortoises in the Galapagos Islands A)
Hoochie [10]

Adaptation is supported by Darwin's observation of local variation among tortoises in the Galapagos Islands.

 

<span>In biology, an </span>adaptation, also called an adaptive trait, is a trait with a current functional role in the life of an organism that is maintained and evolved by means of natural selection. Adaptation<span> refers to both the current state of being </span>adapted<span> and to the dynamic evolutionary process that leads to the </span>adaptation.

 

The correct answer between all the choices given is the second choice or letter B. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

4 0
3 years ago
State three roles of tissue fluids​
butalik [34]

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Tissue fluid is formed from the plasma by process of diffusion and filtration. This fluid occupies the intracellular space and forms the connecting link in the transport of nutrition, gases and the metabolic end products between blood capillaries, tissue cells and the lymph.

Explanation:

6 0
3 years ago
Of the following choices, what is the approximate LD50 of the least toxic substance? 20 mg/kg, 70 mg/kg, or 130 mg/kg
pychu [463]

The approximate LD50 of the least toxic substance will be 130 mg/Kg.

  • The dose necessary to cause the death of 50% of a population under test after a predetermined test period is known as the LD50 value for a drug.
  • Commonly used as a broad indicator of a substance's acute toxicity are LD50 values.
  • Greater toxicity is indicated by a lower LD50. A low LD50 of 500 mg/kg or less implies severe toxicity.
  • Moderate toxicity is indicated by an LD50 of 500 to 1,000 mg/kg. A modest toxicity level of 1,000 to 2,000 mg/kg is indicated.
  • The species is especially vulnerable to the poison if the LD50 is low. The lethal dose (LD50) of a specific poison might change significantly between several animal species.
  • Thus out of all the options, LD50 130 mg/kg will have the lowest toxicity and 20 mg/kg will be the highest.

learn more about LD50 here: brainly.com/question/24845532

#SPJ1

8 0
2 years ago
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