Answer:
C Yellow or red hues in the soil indicate the presence of iron or aluminum.
Explanation:
Soil color depends on different variables in soil. Some of these are the type of minerals or the porosity of the soil. Yellow or red hues in the soil indicate the presence of iron or aluminum. This is because of a particular mineral in the soil. In this case, it is iron or aluminum. A yellow-or-red-colored soil shows there is oxidized iron.
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Answer:
In order to propose a hypothesis, there is a need to first see the function of gills in fishes. The gills of fishes comprise blood vessels that exhibit inherited tendencies of getting oxygen out of the water, which was consumed by fishes from their mouths. These gills also comprise thin walls, and when water moves over these walls of blood vessels, the oxygen from water moves into the blood, and then this oxygen-enriched blood goes to various organs.
Thus, one of the hypotheses in the given case, can be the number of blood vessels, which are found in the gills of the mentioned freshwater fish to be higher in comparison to the blood vessels found in the normal fishes, and apart from this, the surface area of the thin walls, which are found in the gills is also more in the new species of freshwater fish.
Answer
They have polygenic inheritance and are also affected by the environment factor.
Explanation
The trait of height and skin tone are controlled by different genes and are also affected by environmental factors. The skin tone and height within the population is not specific, both have wide ranges varies from high expression of the gene to less or even no expression of the gene. Mostly these factors are mostly affected by inheritance and less by environmental factors.
Qualities that have nothing to do with genetics are dependent on an organism's environment and the organism's genetics do not play a role in determining them. For example, if a person's finger is cut off, this is a trait that is independent of genetics. The loss of a finger will not be inherited into the organism's offspring.
Traits that are dependent on genetics are those such as eye color and height.
Systems thinking focuses on the role of individual elements and their relationship with others in the system.