Answer:
Fecal coliform increases the amount of organic substances in water and lowers the amount of dissolved oxygen, killing fish.
Explanation:
Fecal coliform are species of bacteria that are found in the intestine of warm-blooded animals like humans etc. Hence, they are released whenever they excrete feaces. Due to this reason, the presence of fecal coliform bacteria in a water body indicates fecal discharge into that water.
The presence of excessive fecal coliform in a water body increases the amount of organic substances in the water. These organic substances are decomposed by bacteria, which causes the oxygen present in the water body (dissolved oxygen) to deplete/decrease. The depletion of oxygen in the water threatens aerobic aquatic organisms e.g fishes and they ultimately suffocate and die.
True. Physical changes only affect the inter-molecular bonding and structure.
Answer:
- <u><em>Option D. There will be a shift toward the reactants.</em></u>
Explanation:
The reaction is:
The application of LeChatelier's principle leads to consider the <em>heat</em> as a <em>reactant</em> or a product depending on if it is on the left side or the right side.
In this reaction, the <em>heat</em> is on the left side, thus it must be considered a <em>reactant</em>.
Decreasing the temperature is equivalent to remove or consume heat. Thus, the reaction must shif to the left to compensate that reduction of heat. That is the reverse reaction shall be favored.
In conclusion, <em>there will be a shift toward the reactants.</em>
Plants have made a variety of reproductive adaptations to ensure the spreading and survival of their seed. A common example is the bright colors of many flowers. The purpose of this adaptation is to draw specific insects and birds that will visit the plant and distribute its pollen when they move on to the next plant.
Structural adaptations allow plants to live in specific environments, as is seen in the stark contrast between the roots of terrestrial plants, which are firmly rooted in the ground, and plants that float on the surface of bodies of water.
An example of a behavioral adaptation in plants is how certain desert plants have developed opportunistic behaviors that allow them to spring from dormancy to sudden reproductive activity during times of moisture and cool temperatures.
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