Stimulants increase heart rate, increase respiration, and produce anxiety. This is most likely related to activation of the .

Which of the following is the main purpose of a human community?

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

Deer cave cannot support photosynthesis is as not enough sunlight is present. in spite of this, it still has a complex food chain. what is the energy foundation of this food chain?