What would happen if our atmosphere consisted of pure oxygen

2 answers:

8 0

If the atmosphere was 100% Oxygen, this could cause even the slightest spark of a flame, this could cause the world to turn into a ball of flames. Oxygen is extremely flammable, meaning that everything could set on fire.

kap26 [50]3 years ago

7 0

Everything most likely would be set on fire.

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Which of the choices below determines the direction of respiratory gas movement?

navik [9.2K]

Answer:

a. pulmonary ventilation

Explanation:

Pulmonary ventilation: In biology, the term "pulmonary ventilation" is also referred as "breathing" and is described as a phenomenon of moving air out and into an individual's lungs. Generally, air enters the "respiratory system" via nasal cavity and mouth, and then it passes through the "pharynx" and then the "larynx" and lastly to the "trachea" that enters the "chest cavity" of an individual.

In the question above, the correct answer is option A.

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4 years ago

Which statement describes an important role of carbon dioxide in Earth's atmosphere?

irina [24]

Answer:

Plants use carbon dioxide to make food

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3 years ago

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Match the structure of the macromolecule to the description of the function:

Vadim26 [7]

Answer:

Numerous amino acids allow for proteins to perform many diverse functions in organisms.
The branching structure of some carbohydrates maximize the amount of glucose available for quick energy.

Explanation:

Amino acids are the building blocks of proteins. In humans, all forms of proteins are made up of 20 different types of amino acids. The sequence of amino acids is the key to the production of specific proteins. If the sequence is changed, the target protein will be changed. So, only 20 types of amino acids can produce millions of proteins through different combinations. For example, for a protein with 4 amino acids sequence, 160,000 types of polypeptide chains can be formed (20 X 20 X 20 X 20). Since we know that proteins are key players in cell functioning, their multiple combinations lead to diverse functions in the organisms.

Carbohydrates are an excellent source of energy. Although branching decreases the water solubility of carbohydrates, it compacts the energy-yielding monomers in a small space so that they can be stored and, during starvation, they can produce an extensive amount of energy for long term survival. Carbohydrates in animal and plant bodies are stored as branched structures of glycogen and starch, respectively.

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3 years ago

In the phrase "survival of the fittest," the term "fittest" refers to:

nalin [4]

Answer:

Explanation:

From what I know this could be wrong, but in the four stages of natural selection, the first step is overproduction, the second step is adaptation, and the third step is competition or survival of the fittest. This means that only the organisms with the best adaptations for their surroundings will survive. COULD BE WRONG SORRY IF IT IS

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3 years ago

Which kind of evidence studies mineralized bone, footprints, or organisms trapped in amber to determine common ancestry?

mario62 [17]

Fossils is the evidence

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4 years ago

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