Answer the following question given this paragraph: Without weathering, we would not have any soil on Earth. People could not live on Earth without soil! Your life and the lives of most organisms depend on soil. Soil is only a very thin layer over solid rock. Yet, it is the place where reactions between solid rock, liquid water and air take place. We get wood, paper, cotton, medicines, and even pure water from soil. So soil is a very important resource. Our precious soil needs to be carefully managed and cared for. If we don't take care of the soil we have, we may not be able to use it in the future. Q: Weathering is fundamental to the creation of what, which exists as a very thin layer over solid rock? Choices: - fungus - moss - aquifers - soil A:
soil
(Question)
Answer the following question given this paragraph: Parallel electrical circuits have multiple paths the current may take. Q: What type electrical circuits have multiple paths the current may take? Choices: - perpendicular - single loop - serial - parallel A:
(Answer)
parallel
Ques: Answer the following question given this paragraph: To understand the differences between nuclear fission and fusion. Nuclear reactions, like chemical reactions, are accompanied by changes in energy. The energy changes in nuclear reactions, however, are enormous compared with those of even the most energetic chemical reactions. In fact, the energy changes in a typical nuclear reaction are so large that they result in a measurable change of mass. In this section, we describe the relationship between mass and energy in nuclear reactions and show how the seemingly small changes in mass that accompany nuclear reactions result in the release of enormous amounts of energy. Q: The energy changes in what reactions are enormous compared with those of even the most energetic chemical reactions, and they result in a measurable change of mass? Choices: - molecular reaction - metabolic reaction - methane combustion - nuclear reactions A:
Ans: nuclear reactions
(Q).
Answer the following question given this paragraph: Q: The units of time, day and year are based on what? Choices: - motions of the sun - gravitational waves - moon phases - motions of earth A:
(A).
motions of earth
Ques:Answer the following question given this paragraph: Q: How many pairs of autosomes are there? Choices: - five - four - Seven - three A:

Ans:three
Ques:Answer the following question given this paragraph: A combustion reaction occurs when a substance reacts quickly with oxygen (O 2 ). For example, in the Figure below , charcoal is combining with oxygen. Combustion is commonly called burning, and the substance that burns is usually referred to as fuel. The products of a complete combustion reaction include carbon dioxide (CO 2 ) and water vapor (H 2 O). The reaction typically gives off heat and light as well. The general equation for a complete combustion reaction is:. Q: What kind of a reaction occurs when a substance reacts quickly with oxygen? Choices: - invention reaction - Fluid Reaction - nitrogen reaction - combustion reaction A:

Ans:
combustion reaction