Science Units 1-4 TEST 1 25 of 60 Which is best described as a whirling wind moving through a narrow path in the form of a funnel?
A tornado
OB. hurricane
C thunderstorm
D. earthquake

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen

1. which of the following transport mechanisms utilizes energy? a. osmosis b. diffusion c. facilitated diffusion d. endocytosis

What part of the cell does 9 represent? a. cytoplasm b. lysosome c. ribosome d. centrosome