Answer the following question given this paragraph: In this lesson, you read that air density and pressure change with altitude. The temperature of the air also changes with altitude. Air temperature measures the heat energy of air molecules. Q: What does temperature measure? Choices: - lowest kinetic energy of molecules - average potential energy of molecules - highest potential energy of molecules - average kinetic energy of molecules A:
average kinetic energy of molecules
(Question)
Answer the following question given this paragraph: When you think of muscles, you might think of biceps and the external muscles you see in a bodybuilder. However, some muscles are found deep inside your body. The heart, for example, is a very muscular organ. It has to pump blood all around your body. Q: Which muscular organ pumps blood all around your body? Choices: - stomach - lungs - pancreas - heart A:
(Answer)
heart
Ques: Answer the following question given this paragraph: 22.11.4 Chryosophytes Chryosophytes are the most abundant unicellular algae in the oceans. They are also one of the biggest components of plankton, a free-floating collection of microorganisms, eggs, and larvae. As photosynthetic organisms, they produce a significant amount of atmospheric oxygen. The reproduction cycle of chryosophytes is particularly interesting. Note that diatoms reproduce both asexually and sexually. Since diatoms have a rigid cell wall with an outer layer of silica (found in sand and glass), the daughter cells produced by mitosis must fit inside the original cell wall. Therefore, each generation of diatoms is smaller than the one before. The reduction in size continues until the diatoms produce sexually, producing a zygote which eventually grows to the original size as it matures. Q: What are the most abundant unicellular algae in the oceans? Choices: - chlorella - sporozoans - staurikosaurus - chryosophytes A:
Ans: chryosophytes
(Q).
Answer the following question given this paragraph: When chemicals in solution react, the proper way of writing the chemical formulas of the dissolved ionic compounds is in terms of the dissociated ions, not the complete ionic formula. A complete ionic equation is a chemical equation in which the dissolved ionic compounds are written as separated ions. Solubility rules are very useful in determining which ionic compounds are dissolved and which are not. For example, when NaCl(aq) reacts with AgNO3(aq) in a double-replacement reaction to precipitate AgCl(s) and form NaNO3(aq), the complete ionic equation includes NaCl, AgNO3, and NaNO3 written as separated ions:. Q: A complete ionic equation is a chemical equation in which the dissolved ionic compounds are written as what? Choices: - charged ions - joined ions - realized ions - separated ions A:
(A).
separated ions
Ques:Answer the following question given this paragraph: Chemical reactions always involve energy. Energy is a property of matter that is defined as the ability to do work. When methane burns, for example, it releases energy in the form of heat and light. Other chemical reactions absorb energy rather than release it. Q: Chemical reactions always involve what? Choices: - fuel - heating - physical change - energy A:

Ans:energy
Ques: Answer the following question given this paragraph: Companies that design and build roller coasters employ a range of technology professionals. Technology is the application of science to real-world problems. Professionals in technology are generally called engineers . Engineers are creative problem solvers. They use math and science to design and develop just about everythingfrom roller coasters to video games. Q: What are professionals in technology are generally called ? Choices: - scientists - biomechanics - doctors - engineers A:
Ans:
engineers