An ax is compound matchine that includes what

a. a lever and a wedge
b. two levers
c. a wedge and a pulley
d. a lever and a screw

Which locations on the map are low-pressure areas? a b c d e

Which of the following cognitive skills have not been displayed by animals? a. using tools b. forming concepts c. transmitting culture d. using syntax

which is an effect of short-term environmental changes? a) adaptation b) speciation c) extinction d) death (5 points)