Bob thinks that plants get their materials for growth from the soil. Write a couple of sentences to explain why is Bob incorrect.

Noble gases are the most reactive elements on the periodic table. a. true b. false

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

You open a can of soda at room temperature and hear a hiss. which of the following factors has changed inside the container? a.) atmospheric pressure b.) temperature of gas c.) type of gas d.) amount of gas