In general, biodiversity is
A) fairly evenly spread among all of the major groups of animals and plants.
B) accurately quantified for most ecosystems, especially in tropical regions.
C) 75% plant species and 25% animal species.
D) declining in the United States and around the world.
D
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The beginnings of the European Union lay in a plan calling for the regional sharing of resources such as coal
Indicate whether the statement is true or false
The Greek mathematician and geographer Eratosthenes is noted for
A) his highly precise maps of the coastlines of Mediterranean Europe and Africa. B) calculating Earth's diameter by measuring celestial angles at two different locations. C) inventing the concepts of time zones by dividing 360 by 24, thereby establishing 15° zones. D) being the first to realize the spherical shape of Earth E) reasoning that Earth's equatorial bulge was the result of Earth's rotation and centrifugal force.
Which type of cells produce antibodies?
A) A cells B) NK cells C) plasma cells D) T cells
Together, the coastal and shallow offshore environments make up the littoral zone
Indicate whether the statement is true or false