(01.02 LC)

Which of the following is true about the mass of an object?

It decreases if weight increases.
It cannot be measured accurately.
It is the amount of matter in the object.
It is the amount of space occupied by the object.

The body is protected against harmful flu viruses by

Select the true statements about eubacteria. most live as decomposers and heterotrophs. most only thrive in a narrow range of environments. certain eubacteria are responsible for food poisoning. eubacteria thrive in extreme environments.

Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise? 1.b,2.c,3.a,4.d