Answer:
A fact.
Reasoning:
If it was an opinion, it would say "I think" in the beginning.
Do note that not all sentences have to start with "I think" though.
Answer:
Option B: compounds
Explanation:
Elements can be chemically combined into compounds, therefore, a compound consists of two or more elements combined, in fixed rstios, by chemical means.
Answer:
a perceptual set
Explanation:
According to my research on various studies conducted by psychologists, I can say that based on the information provided within the question Mary's error in identifying the voice illustrates the effect of a perceptual set. This term refers to a predisposition within individuals to expect something in a certain way based on some information. Which in this case is what happened with Mary since she was expecting her husband to call based on him saying he would call before lunch.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
Answer:
Matter changes when energy is added or taken away
Explanation:
Most matter changes because of heat energy. When matter is heated enough, the molecules move faster and with greater energy. If enough heat is added, a solid can become liquid and a liquid can become gas.
