Answer:
The correct answer will be-
Case I- option-B
Case-II-option-B
Explanation:
A scientific method is the best procedural approach to explain the natural phenomenon. The method includes various steps which begin with the making the observation. The observation leads to the asking the scientific questions which could be answered by proposing a hypothesis.
The hypothesis must be tested through experiments which could prove and disprove the hypothesis and can answer the natural phenomenon.
<u>Case-I</u>
In the given situation of the question in which a person notices or observes the fields of grass and grass and native flower. Since the researcher notices the fields, they are performing the first step of the method that is "making an observation" and thus Option-B is the correct answer.
<u>Case-II</u>
In the situation, which discusses the number of birds in the fields shows the "dependent variables". The dependent variable is the parameter which is studied in the experiments. Since in the given conditions the number of birds is being studied, therefore, Option-B is the correct answer.
Answer: 120 - 240 kilometers per hour
Explanation:
Jet streams are narrow, fast flowing, air currents that are in the atmospheres of certain planets, which includes the Earth. Jet streams are air currents that are placed very high above the Earth and form where there are big differences in temperature in the atmosphere.
The jet stream has winds that blow up to 120 - 240 kilometers per hour which can greatly influence the impact of weather patterns over a continent.
Nuclear fusion generates the energy that is released by stars.
In the great majority of stars, it's the fusion of hydrogen nuclei
to form helium nuclei plus energy. In very old stars, the nuclei
of heavier elements are fused, forming even heavier ones.
Answer:
Ethiopia is most densely populated in the highlands where most people live as farmers. In the 1980s, the Socialist regime made unsuccessful attempts to forcibly relocate people away from the civil war and gather the people in new villages. Ethnically, the population is very mixed and hundreds of different languages are spoken.
More and more Ethiopians are seeking refuge in the cities today than ever before. The biggest reason why more and more Ethiopians are moving to the cities is that wages are higher there than in the countryside and that there are more jobs to choose from (in the countryside it is mostly agriculture). Despite that, only 20% of the population lives in cities and other urban areas.
