Which example shows an advanced understanding of the meaning and purpose of an animal’s communication?
a. a gorilla that uses sign language to express itself
b. a dog that barks at the sight of a stranger
c. a skunk that is fearless because it knows its scent will protect it
d. a cat that marks its territory with urine

If a cell's main function is to produce proteins to be excreted, which organelles would you expect to be larger

Ricardo notices that when he plays soccer in the rain, his ball does not seem to go as far after a kick. what is the best scientific question that ricardo could ask about this observation? is soccer better played in the rain or sun? how does rain affect the distance a soccer ball can travel? how does rain affect the speed of a soccer ball? is soccer affected by the rain?

Drag each label to the correct location on the table. each label can be used more than once. decide whether each statement describes saturated fat, unsaturated fat, or both saturated and unsaturated fats.