Answer:
By changing a gene's instructions for making a protein, a variant can cause a protein to malfunction or to not be produced at all.
Explanation:
<u>Nitrogen and potasium levels</u> are NOT primary measures of soil quality.
Explanation:
The deeper the soil horizon, the more fertile the soil. This is because this means the soil has had enough time to weather and release the elements/minerals held up in the parent rock.
Soil composition is also important for soil quality. The good ratio silt, clay, and sand can determine the quality of the soil. This same composition can determine the holding capacity of water in the soil for plants and other soil organisms.
Organic matter is important in raising soil quality. They ensure the soil retains water nutrients from leaching
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Answer:
E. Both the assertion and the reason are incorrect.
Explanation:
Coral reefs are found in the tropical water which is poor in nutrients. The species of coral that form the reefs have symbiotic zooxanthellae in their tissues that can carry out the process of photosynthesis. The coral reefs obtain their food from their symbiont and hence, can survive in the water that lacks enough supply of nutrients.
Coral reefs also use their stinging tentacles and capture the small animals to feed on them. However, the food derived from symbiont zooxanthellae is the major source of nutrients for them.
Explanation:
SARS, Ebola, swine flu, rabies