When conducting tests for the presence of a specific organic substance, it is very useful to include an Experiment control.
<h3>What are chemical changes?</h3>
A chemical change is defined as a change in which a change in chemical composition takes place. A new substance is formed in these reactions. Chemical reactions are usually characterized by a change in colour, heat change, precipitate formation and evolution of bubbles.
Example: Oxidation of magnesium
Thus, this could be the answer.
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Answer:
The correct answer is option B. "It disrupts a larger area and produces less oil than drilling".
Explanation:
Oil extraction from tar sands is an inefficient way of extracting oil from a mixture of oil, sand, clay and water. The oil extraction from tar sands requires a considerable amount of energy and water and generates more pollution than oil drilling. Another downside of this process is that it disrupts a larger area and produces less oil than drilling. It is estimates that to produce one barrel of oil, 2 tons of oil sand should be processed.
The answer to this question is : Phospholipids <span />
Answer:
The student is wrong, just because the analogous structures of any two organism may have the same structure or even have the some relation between there way of operation or functions.
Explanation:
- <u>Analogous Structures:</u>
As the similarity between two or more different organisms structure or any organ does not means that they have same ancestors or have the common origin from which the evolve into two different species. Now analogous structures are very much similar in there structure physically, but two different organisms may use them for the same function, which is astonishing to see or observe in way different species.
As the structure of the flipper of a Dolphin has similarity with the phalanges of a human being and with the wings of the bat. As all of them functions for the basic need of movement or locomotion from one point to another. While, all the three species are very much different in there features and are not the same obviously.
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Plants and algae are the two groups of organisms
