Which of the following is not a benefit of improved cardio-respiratory fitness?
a. arteries grow bigger
b. resting blood pressure goes down
c. risk of heart disease decreases
d. slower post exercise recovery time

Which of these statements best explains how the hydrosphere interacts with the atmosphere to affect global climate? mountains block rain clouds and cause changes in global rainfall and evaporation. humans burn fossil fuels to produce greenhouse gases which cause global warming. humans cut down trees which affects the amount of oxygen in different parts of the globe. greenhouse gases, like carbon dioxide, dissolve in oceans and prevent global warming.

Use the illustration to describe how the electromagnetic spectrum changes as its frequency moves from radio waves to higher energy gamma waves in terms of wavelength and amplitude.

Which of the following statements correctly describes a transformer?