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.
Answer:
Earth
Explanation:
Earth, our home, is the third planet from the sun. It's the only planet known to have an atmosphere containing free oxygen, oceans of water on its surface and, of course, life. Earth is the fifth largest of the planets in the solar system. ... About a fifth of Earth's atmosphere consists of oxygen, produced by plants.
What Is Earth? | NASA
Answer:
21
Explanation:
y=mx+b
mx = slope and b= y intercept
y=5-21
Answer:
its the crust and a little bit of the upper mantle
Explanation:
