Eutrophication describes:
A. the process in which added nutrient levels
lead to the growth of algae and cyanobacteria
populations.
B. the reduction of oxygen in the water as a
result of bacterial decomposition.
C. the total amount of nitrogen fertilizer that
leaves agricultural fields as surface runoff.
D. the increased production of crops using
fertilizer.
E. the death and decomposition of algal
blooms.
A
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In a developing human embryo, the hands and feet resemble mittens, with cells and tissues present between the fingers and toes. When a baby is born, these cells are not present, resulting in distinct fingers and toes. In the development of fingers and toes these cells were lost by ____.
A. cell connections B. cell migration C. apoptosis D. cell division E. cell morphology
The mass number is defined as the total number of of an atom.
A. protons B. protons, neutrons, and electrons C. neutrons and electrons D. protons and electrons E. protons and neutrons
The ____________________ membrane is a connective tissue structure that lines joint cavities. Fill in the blank(s) with the appropriate word(s)
There are three aspects of entire populations that are important and often studied. Select the best choice from the ones listed.
A. a population's range, the size home range of an individual in the population, and the parental care expended for each offspring B. a population's range, the amount of food available within the range, and the size that the population attains C. a population's range, the parental care received by each offspring within the population, and the size that the population attains D. a population's range, the pattern of spacing of individuals within the range, and the size that the population attains