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Masja [62]
4 years ago
12

Which earth layer us inferred to be composed of solid nickel and iron

Biology
2 answers:
kotegsom [21]4 years ago
5 0
The inner core is the layer that is completely made of solid iron and nickle 
Ganezh [65]4 years ago
3 0
<span>Approximately 2900 km thick. The Outer Core. This </span>layer<span> is thought to be a liquid </span>composed<span> of </span>iron<span> and </span>nickel<span>. S-waves do not pass through this </span>layer<span> and that's how scientists have </span>inferred<span> it is a liquid.</span>
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Which of these changes to a modern lifestyle would promote the development of more-sustainable practices in the world food syste
dezoksy [38]

Answer:

c. switching from beef to soy

Explanation:

Switching from beef to soy shall lead to the curbing of lifestyle diseases such as obesity.

At the same time, soy shall provide the nutrients that were needed by the body and could be obtained from beef.

Beef is much expensive compared to beef, thereby, there shall be experienced  low expenditure compared to beef.

Therefore the switching from soy to beef shall be a more sustainable food system.

6 0
4 years ago
What are the inputs of the light dependent reactions?.
bixtya [17]

Answer:

6 water molecules (and technically sunlight/energy)

Explanation:

The inputs of photosynthesis are water and carbon dioxide (and energy); water is used in the light-dependent reactions, and carbon dioxide is used in the light-independent.  The water has to be there to replace the lost electrons in the chlorophyll that leave the thylakoids after being excited by the solar energy.

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3 years ago
Need help in biology with this 6 mark questions
Lady bird [3.3K]
Explains the heart and breathing rate

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3 years ago
The main reason that it's important to test only one variable at a time is so that
lozanna [386]
Because if we're simultaneously moving/manipulating two different variables it can be very hard to determine why one variable is changing and why the other is changing. While this can be done with more complicated experimental designs, it usually is the case that scientists will only manipulate one variable and not two different ones. 
3 0
3 years ago
Read 2 more answers
What is the oxidizing agent in the following reaction?
Andru [333]

Answer:

The answer is d. pyruvate

Explanation:

An oxidizing agent is the substance that gains electrons in a chemical reaction. At the end of the reaction it is reduced and its oxidation state increased.

A reducing agent is the substance that loses electrons in a chemical reaction. At the end of the reaction it is oxidized and its oxidation state decreased.

Pyruvate gains one electron, it is reduced from pyruvate to lactate; thus, pyruvate is the oxidizing agent.

NADH loses one electron, it is oxidized from NADH to NAD; thus, NADH is the reducing agent

3 0
3 years ago
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