Which statement is an example of mutualism? O A koala eats eucalyptus leaves, and it is unharmed by the poison in the leaves.
O A deer tick feeds on the blood of a deer, and the deer loses blood and nutrients.
A plover bird feeds on food stuck in a crocodile's teeth, and the crocodile gets its teeth cleaned in the process.
O A hookworm feeds on the small intestine of a dog, causing the dog to lose weight and become weak.

In which of the following ways is the function of the surface of a microsphere similar to the function of an actual cell membrane? a.both make it possible for the conditions in the interior to be different from the conditions outside. b.both provide a barrier that keeps water from flowing across it so the interior remains dry. c.both separate the rna that forms in the interior from any rna that might form in the environment. d.both can actively move molecules into the interior or out into the surrounding environment.

In which state was more than 100 billion tons of coal mined in 2005?

_tissues respond quickly to outside stimuli a) epithelia b)nervous c)muscular d)muscular and nervous