The seed plants became dominant in the late ___ when the climate became ___.

a. Cambrian---wetter
b. Carboniferous---drier
c. Carboniferous--wetter
d. Cretaceous---drier
e. Cretaceous---wetter


B

Biology & Microbiology

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At the end of meiosis II, each of the four resulting cells contains  

A.  one full set of chromosomes, each with 2 molecules of DNA. B.  two full sets of chromosomes, each with 2 molecules of DNA. C.  one full set of chromosomes, each with 1 molecule of DNA. D.  two full sets of chromosomes, each with 1 molecule of DNA.

Biology & Microbiology

The definition of simple primary tissues is that they are composed of which of the following?

A. one or two simple cell types B. several cell types C. many cell types D. All of the choices are correct. E. None of these choices is correct

Biology & Microbiology

In science, the word "theory" ____

a. is an explanation that has not been published b. has essentially the same meaning as a prediction c. is based mostly on opinions d. signifies that a hypothesis has been tested and proven over a period of time e. means that a scientist has a hunch something is true

Biology & Microbiology

More rainfall enters the soil on steep slopes than on level land

Indicate whether the statement is true or false

Biology & Microbiology