Answer the following question given this paragraph: Mom the Barbarian. Yogurt is made from milk fermented with bacteria . CC BY 2.0. Q: Yogurt is made from milk fermented with what type of organism? Choices: - viruses - yeast - algae - bacteria A:
bacteria
(Question)
Answer the following question given this paragraph: Soil formation requires weathering. Where there is less weathering, soils are thinner. However, soluble minerals may be present. Where there is intense weathering, soils may be thick. Minerals and nutrients would have been washed out. Soil development takes a very long time. It may take hundreds or even thousands of years to form the fertile upper layer of soil. Soil scientists estimate that in the very best soil forming conditions, soil forms at a rate of about 1mm/year. In poor conditions, it may take thousands of years!. Q: What slow process is required for formation of soil? Choices: - leaching - digestion - fossilization - weathering A:
(Answer)
weathering
Ques: Answer the following question given this paragraph: Q: All living things need air and this to survive? Choices: - stimuli - habitat - ecosystem - water A:
Ans: water
(Q).
Answer the following question given this paragraph: An esker is a winding ridge of sand deposited by a stream of meltwater. Such streams flow underneath a retreating glacier. Q: What is a winding ridge of sand deposited by a stream of meltwater called? Choices: - sand dune - desert - oasis - esker A:
(A).
esker
Ques:Answer the following question given this paragraph: Inorganic chemistry is the study of chemicals that do not, in general, contain carbon. Inorganic chemicals are commonly found in rocks and minerals. One current important area of inorganic chemistry deals with the design and properties of materials involved in energy and information technology. Q: Inorganic chemistry refers to the study of materials *not* containing which element? Choices: - hydrogen - helium - oxygen - carbon A:

Ans:carbon
Answer the following question given this paragraph: Tonicity Tonicity describes how an extracellular solution can change the volume of a cell by affecting osmosis. A solution's tonicity often directly correlates with the osmolarity of the solution. Osmolarity describes the total solute concentration of the solution. A solution with low osmolarity has a greater number of water molecules relative to the number of solute particles; a solution with high osmolarity has fewer water molecules with respect to solute particles. In a situation in which solutions of two different osmolarities are separated by a membrane permeable to water, though not to the solute, water will move from the side of the membrane with lower osmolarity (and more water) to the side with higher osmolarity (and less water). This effect makes sense if you remember that the solute cannot move across the membrane, and thus the only component in the system that can movethe watermoves along its own concentration gradient. An important distinction that concerns living systems is that osmolarity measures the number of particles (which may be molecules) in a solution. Therefore, a solution that is cloudy with cells may have a lower osmolarity than a solution that is clear, if the second solution contains more dissolved molecules than there are cells. Hypotonic Solutions Three termshypotonic, isotonic, and hypertonicare used to relate the osmolarity of a cell to the osmolarity of the extracellular fluid that contains the cells. In a hypotonic situation, the extracellular fluid has lower osmolarity than the fluid inside the cell, and water enters the cell. (In living systems, the point of reference is always the cytoplasm, so the prefix hypo- means that the extracellular fluid has a lower concentration of solutes, or a lower osmolarity, than the cell cytoplasm. ) It also means that the extracellular fluid has a higher concentration of water in the solution than does the cell. In this situation, water will follow its concentration gradient and enter the cell. Hypertonic Solutions As for a hypertonic... Q: Which word describes how an extracellular solution can change the volume of a cell by affecting osmosis? Choices: - velocity - trichina - instability - tonicity A:
tonicity