Answer: Noting the color of the solution as it is heated.
Explanation: All other choices are examples of quantitative data. As in the measuring of a quantity(mass, volume, temperature). The last choice is an observation that cannot be easily converted into a numeric form.
They ensured that balance in the ecosystem was maintained. They ensure that the genetic diversity and species is maintained. Sea otters applied natural selection pressures on the sea urchins population hence maintaining their level such that they will not overgraze on the kelps. Overgrazing would severely affect the sea urchin population and consequently severely affect the sea otters population too.
yes the trees maintain the balance between gases in the air
<span>When there is no oxygen, or the organism cannot use oxygen for respiration.
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B) Frost
Frost is a thin layer of ice on a solid surface, which forms from water vapor in an above freezing atmosphere coming in contact with a solid surface whose temperature is below freezing, and resulting in a phase change from water vapor to ice as the water vapor reaches the freezing point.
