A significant event influencing the rapid evolution of

plants on land after their initial appearance was the
a. increase of atmospheric oxygen.
b. reduction of ultraviolet radiation penetration
through the atmosphere.
c. stabilization of global climates.
d. increase in soil nutrients.
e. merging of land masses.


Answer: b

Biology & Microbiology

You might also like to view...

The coat color of calico cats is a result of _____

A. maternal inheritance B. X-inactivation C. imprinting D. extranuclear inheritance

Biology & Microbiology

Which of the following is NOT found in hydrocarbons?

a. branching b. double bonds c. ring formation d. triple bonds e. quadruple bonds

Biology & Microbiology

Four of the five drugs listed below are stimulants

Select the exception. a. heroin b. caffeine c. nicotine d. cocaine e. amphetamine

Biology & Microbiology

Thanks to flexible base pairing, the wobble nucleotides in anticodons can be any of the RNA nucleotides or which modified nucleotide?

What will be an ideal response?

Biology & Microbiology