The city that lies 10km it maybe oxford
Bacteria are required or needed in the nitrogen cycle because other living properties cannot use atmospheric nitrogen.
<h3>What is the nitrogen cycle?</h3>
The nitrogen cycle is the sequence of operations by which nitrogen and its mixtures are interconverted in the environment.
In living organisms, It considers nitrogen fixation and pollution.
As regards Nitrogen fixation is affected, just bacteria are competent to improve atmospheric nitrogen into structures usable by other living organisms.
In nitrogen fixation, the atomic nitrogen is converted into chemical forms functional by plants and convert atmospheric nitrogen into chemical forms functional by plants.
Therefore, option A is correct.
Learn more about the nitrogen cycle, refer to:
brainly.com/question/9243222
Answer:
through glacial deposits and ice cores
Explanation:
Scientists use ice to study ancient climates through glacial deposits and ice cores.
These two sources are fundamental to the study of ancient climates whose salient information has been preserved and locked in time through glacial deposits.
- A place can remain frozen for an extended period of time.
- Some gas bubbles can be trapped in the midst of ice being formed.
- These bubbles and compacting sequences of ice layers are used to interpret ancient climates.
- Ice cores are drilled an collected in barrels where they are taken to the laboratory for further studies.
- It is possible to even date each ice layer.
So, the solution is through glacial deposits and ice cores.
Answer: B) Bob is using his personal knowledge of the local area to make his forecast.
Explanation:
Weather forecasting uses a series of technological instruments and human knowledge to predict changes in the weather. Instruments which may be digital measure the temperature, wind directions and other atmospheric conditions. However, these measurements and observations can sometimes be confusing and require knowledge of the local weather to be interpreted correctly. This is what Bob has done here.
Answer:
<u>Iron </u>and <u>Nickel</u>
<u>core</u>
<u>Iron and Nickel</u>
Explanation:
Two of the most popular magnetic chemicals in the world are iron and nickel.
We can now match these metals with the description given in the question to check if they perfectly fit in the blanks.
The densities of iron and nickel are 7874kg/m3 and 8900kg/m3 respectively. To put this into perspective, the density of aluminium is only 2700kg/m3. This means that iron and nickel are really dense solid materials. These materials are strong enough to make the core of the earth.
Because these materials are also magnetic and strong, we can say that they are the materials that form the solid core of the earth's structure.
