How do saltwater crocodiles communicate with each other?
a. Chemical signals in the environment
b. Changing colors
c. Posturing and stances
d. Calls and barks
d
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Which of the following is the definitive host?
A) deer B) soil C) snail D) free living stage
Species that have a delayed reproductive stage, are competing for limited resources and have smaller numbers of slowly maturing large offspring show ________ adaptations.
A. K-selected B. r-selected
A body of learned behavior that is socially transmitted among individuals and passed down from one generation to the next is known as ____
Fill in the blank with the appropriate word.
Mammals may ____ as a response to cold in order to limit the amount of heat lost to the surroundings
a. shiver b. go off to lay alone so that others do not take their heat c. press hair shafts close to the body d. reduce blood flow to the skin e. lose brown adipose tissue