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anzhelika [568]
2 years ago
13

A hydrogen fuel cell is more efficient than a combustion reaction because very little of released energy as ___________ (Heat, e

lectrical, chemical) When used at home a fuel cell eliminates the need for ________ (Oxygen, hydrogen, electcial grid)
Biology
1 answer:
Bogdan [553]2 years ago
7 0
Heat (06.01)<span>The probability that an event will occur is 100%. Which of these best describes the likelihood of the event occurring</span>
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3 years ago
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How do plants use nitrogen?
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Answer:

Nitrogen is so vital because it is a major component of chlorophyll, the compound by which plants use sunlight energy to produce sugars from water and carbon dioxide (i.e., photosynthesis). It is also a major component of amino acids, the building blocks of proteins. Without proteins, plants wither and die.

5 0
3 years ago
In the term trace element, the adjective trace means that
Margarita [4]

Answer:

The elemental is required in very small amount. (Ans. A)

Explanation:

Trace element is also known as micro-nutrient. It is also defined as any chemical element required by living organisms in a minute or small amounts which is usually part of the vital enzyme (cells produced by catalytic protein).

Exact needs of trace elements vary among species, like commonly required plant trace elements are cooper, zinc, manganese, boron, and molybdenum. Animals commonly required iodine, manganese, and cobalt.

Absence of necessary plant trace elements required by plants in the soil causes deficiency disease, lack of animal trace elements used by animals in the soil may not harm plants, but, animals feeding on those plants develop their deficiency disease.

So, the adjective trace means that the elemental is required in a very small amount.

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3 years ago
Which of these was designed to study Saturn?
Alex

Answer: C. is your answer

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Soil is best described as _______.
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Soil is composed of small pieces of a variety of materials, so it is a heterogeneous mixture.

Explanation:

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