Land was first colonized about ________ years ago

A) 100 million
B) 500 million
C) 1.7 billion
D) 2.5 billion


B

Biology & Microbiology

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The tube-nose of tubenoses may be used as a means of enhancing their ability to smell, or to discern strength of air currents

Indicate whether the statement is true or false

Biology & Microbiology

In any physical or chemical change, energy cannot be created or destroyed. This is the ________ law of thermodynamics

Fill in the blank with correct word.

Biology & Microbiology

What is the method of having results evaluated by other experts in the field called?

a) peer review b) inductive method c) scientific method.

Biology & Microbiology

Which of the following may be a component of bacterial cell walls?

A) carrageenan B) lipoteichoic acids C) mycolic acid D) tubulin E) both lipoteichoic and mycolic acids

Biology & Microbiology