Answer:
45.13 beats/min
Explanation:
Speed of space vehicle = 0.51c
the pulse rate measured by the astronaut= 61.0 beats per minute
Pulse rate measured by the Earth observer is given by

putting vales we get

= 45.13 beats/min
D) Pitch since it does not measure distance, media, or speed (because it only has one speed)
The taiga biome is a forest biome it has wet summers and long cold winters. The tundra, yes is considered a cold biome. But I do not think the taiga biome is a cold biome since it is a forestial biome. Also many plants grow in a taiga biome specifically Boreal and Coniferous forest plants. I believe it is false.