(Q).
Answer the following question given this paragraph: Some objects produce light without becoming very hot. They generate light through chemical reactions or other processes. Producing light without heat is called luminescence . Luminescence, in turn, can occur in several different ways:. Q: What is the name of the process where light is produced without heat? Choices: - radiation - effervescence - fluorescence - luminescence A:
(A).
luminescence

(Q).
Answer the following question given this paragraph: Bacteria can also be chemotrophs. Chemosynthetic bacteria, or chemotrophs , obtain energy by breaking down chemical compounds in their environment. An example of one of these chemicals broken down by bacteria is nitrogen-containing ammonia. These bacteria are important because they help cycle nitrogen through the environment for other living things to use. Nitrogen cannot be made by living organisms, so it must be continually recycled. Organisms need nitrogen to make organic compounds, such as DNA. Q: Bacteria can be chemotrophs, which obtain what by breaking down chemical compounds in their environment? Choices: - waste - chemials - food - energy A:
(A).
energy

(Q).
Answer the following question given this paragraph: Primary succession occurs in an area that has never before been colonized. Pioneer species include bacteria and lichens that can grow on bare rock and help make soil. Q: What kind of succession occurs in an area that has never before been colonized? Choices: - addition succession - secondary succession - support succession - primary succession A:
(A).
primary succession