Velocity tells you how fast and in what direction. Speed only tells how fast.
Answer:
C) 350 m/s N
Explanation:
Velocity is measured in miles per hour or metres per second.
The bottleneck event of the plants in an area results in secondary succession.
<h2>What is bottleneck event?</h2>
A bottleneck is an event that drastically reduces the population size of an organism. The bottleneck may be caused by various events, such as an environmental disaster, the hunting or habitat destruction that results in the deaths of organisms.
<h3>Secondary succession</h3>
Secondary succession is a type of ecological succession in which plants and animals recolonize a habitat after a major disturbance such as a devastating flood, wildfire, landslide, lava flow, or human activity e.g., farming or road or building construction.
Learn more about succession here: brainly.com/question/1212975
Ground water keept the ground at a stable level when it is gone the cavern it was in has no support and is at risk of callaps