Select all of the following that are valid counterarguments to the idea that evolution is "just a theory."
_____ Scientists use the word theory to describe unifying ideas.
_____ Evolution is just a collection of facts without a central theme and this is not a theory.
_____ Scientific theories are supported by many types of evidence and no empirical data refutes them.
_____ Evolution occurred in the past, but it is not occurring in the present, so it cannot be a theory.
__X__ Scientists use the word theory to describe unifying ideas.
_____ Evolution is just a collection of facts without a central theme and this is not a theory.
__X__ Scientific theories are supported by many types of evidence and no empirical data refutes them.
_____ Evolution occurred in the past, but it is not occurring in the present, so it cannot be a theory.
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The hormone erythropoietin (EPO) stimulates the production of red blood cells. If there is a stimulation that increases EPO production, what effect would this have on transport of oxygen and carbon dioxide?
A. Oxygen transport would increase; carbon dioxide transport would not be affected much. B. Oxygen transport would decrease; carbon dioxide transport would not be affected much. C. Oxygen transport would increase; carbon dioxide transport would decrease. D. Oxygen transport would decrease; carbon dioxide transport would increase. E. Oxygen and carbon dioxide transport would both increase.
The loudness (intensity) of a sound is specifically associated with the
A) frequency of sound waves. B) area of the brain interpreting the sensory input. C) specific hair cells that respond in the cochlea. D) amplitude of the sound waves. E) duration of the sound.
Cuboidal epithelial cells are thin, flat cells
____________________ Indicate whether the statement is true or false.
What is the main reason that the tundra does not have large plants?
A) the permafrost persists, even during the summer B) the amount of rainfall is not enough for large plants to survive C) the other species of plants have outcompeted them for resources D) the amount of sunlight is not great enough for large plants to survive E) the seeds of large plants were never dispersed into these regions