endocrine signals use _________ for communication
Fill in the blank(s) with the appropriate word(s).
hormones
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The Simpson's diversity index value is higher when the number of species in a system is lower
Answer the following statement(s) true (T) or false (F)
The motile, feeding stage of protozoa is called the ________.
A. cyst B. trophozoite C. food vacuole D. sporozoite E. oocyst
Which pathway correctly traces a drop of blood through the vascular system?
A) right ventricle, lungs, left atrium, left ventricle, body, right atrium B) left ventricle, lungs, right atrium, right ventricle, body, left atrium C) right ventricle, lungs, right atrium, left ventricle, body, left atrium D) left ventricle, lungs, left atrium, right ventricle, body, right atrium
The philosophy of Intelligent Design holds that strong evidence exists for creation by a divine being because some living things have parts that are so complex and complicated that they simply couldn't have developed through evolutionary processes; they had to have been created. Intelligent Design is not a science because:
A) no complex or complicated structures exist in nature. B) most scientists don't believe in it. C) several scientists do believe in creation science. D) the idea that a deity created complex biological structures is not testable or measurable. E) scientists already know how all complex structures came to be through evolution.