Desertification is mainly caused by ____
a. lack of rain
b. poor agricultural practices
c. too much precipitation
d. deforestation
e. erosion
ANSWER: b
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A derived character that is shared by all members of a clade is called a ______________ of that clade.
Fill in the blank(s) with the appropriate word(s).
Ticks, lice, and mosquitoes often serve as (carriers/transporters/vectors) by hosting and transmitting pathogenic microbes
What will be an ideal response?
Which of the following CANNOT be transmitted to humans from domestic cats?
A) toxoplasmosis B) plague C) Chagas' disease D) Bartonella E) None of the answers is correct; all of these diseases can be transmitted to humans from domestic cats.
Most plants absorb water and minerals from the ________ and transport them through the ________.
A. atmosphere; xylem B. soil; phloem C. atmosphere; phloem D. soil; xylem