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.
A stem-and-leaf graph is a way to organize a large number of data
Answer:
Aloft high pressure develops in cold air regions while low pressure develops in warm air regions
Explanation:
A thermally-driven circulation, or thermals are the movement of warm air that move to a higher level due to the buoyancy forces acting on them. That is due to the difference in densities between the warmed and cool air
Given that pressure = Density, <em>ρ</em> × Gravity, <em>g </em>× Height, <em>h</em>, we have that decrease in pressure (low pressure) is due to low density, therefore, the warm air having low pressure, moves upwards, due to their low density
Therefore, the best option is aloft, (as we move higher), high pressure develops in cold air regions while low pressure develops in warm air regions
Answer:
aquifer
Explanation:
Most aquifers contain water saturated layers of rock or loose sediment. Aquifers have within them water- filled caves.
