What are the two types of dichotomous keys. which is easier to use?

Why should the scientific method be used to answer a question? a. it provides a way to test an idea without any bias. b. it provides a way to test a hypothesis. c. it provides a way to ensure all hypotheses are proven correct. d. it provides a way to quickly turn a hypothesis into a scientific theory.

Write a paragraph at least 10 sentences explaining how rocks are used today in society

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.