Answer:
<em>The correct option is theories. </em>
Explanation:
A scientific theory is a detailed explanation of natural researches which are supported through evidence. Scientific theories can be changed if other evidence are made which support another theory. Hence, scientific theories can change. The concepts of plate tectonics and evolution change overtime whenever new pieces of evidence are discovered. Hence, they are scientific theories.
Other options such as hypotheses are not correct because a hypothesis is just a tentative statement which can either be proved to be correct or wrong. Observations are not made on evidences hence the option observations is also not correct.
Because they are at the intertropical converge zone. Which is where air rises due to direct solar radiation causes water vapor to fall back to earth as rain.
Warm land has now sufficiently heated the overlying air, so that cooler air over the ocean is now moving onshore as a sea breeze.
1. Niger has twice as many births as deaths per 1,000 people, but the life expectancy is only 52.6, resulting in a young median age. Is TRUE
<u>Explanation:</u>
According to the world bank collections Niger has twice as many births as deaths per 1000 people, but the life expectancy is only 54.6 resulting in a young median age.
Birth rate was recorded as 48.14% It includes number of live births occurring during the year per 1000 population. Italy and Niger have backward masses economics: Italy has a developing people with a high future, and Niger has very young people with heel expectation.
The primary- resources is the activity is practiced by 83.5% of people in the United Kingdom. The economic activities that occur while utilizing natural resources are classified as Primary resources.
<h3>What is primary resources?</h3>
Original materials, regardless of format, are primary sources. Letters, diaries, minutes, photos, artifacts, interviews, and sound or video recordings are examples of primary sources created during a period or event.
The west Europe has explotited other countries at the time of colonization to fulfill their demands of resources is the main reason of doing primary resources.
Thus option A is correct
For more details about primary resources, click here
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