Biomes. The two main types of biome are terrestrial (land-based) and aquatic (water-based). The easiest to discuss are the terrestrial biomes since they have a more definite boundary. The different climates of the Earth are governed by their average annual precipitation and temperature.
An electrocardiogram (ECG or EKG) test. An electrocardiogram (ECG or EKG) is a routine test that is used to look at the electrical activity of the heartbeat. An electrocardiogram can tell your doctor a lot about your heart and how it is working.
The three major types of ECG are: 1  resting ECG â the person lies down. 2  ambulatory ECG â an ambulatory or Holter ECG is performed using a portable recording device that is worn for at least 24 hours. 3  cardiac stress test â this test is used to record a personâs ECG while they ride on an exercise bike or walk on a treadmill.