Question

bottleneck effect
a bottleneck effect occurs when a random event (like a tornado, drought, or other natural disaster) wipes out a large chunk of the population. the population gets smaller, just like the neck of a bottle gets smaller.
before
bottleneck effect
after

1. how many different organisms are there before the tornado? ________
2. how many different organisms are there after the tornado? ________
3. how do natural disasters affect biodiversity? ________

Explanation:

Step1: Count organisms before tornado

Count the distinct - shaped symbols in the 'Before' box. There are 9 different - shaped symbols representing organisms.

Step2: Count organisms after tornado

Count the distinct - shaped symbols in the 'After' box. There are 4 different - shaped symbols representing organisms.

Step3: Analyze impact on biodiversity

Natural disasters like tornadoes reduce the number of different organisms, thus decreasing biodiversity.

Answer:

1. 9
2. 4
3. Natural disasters reduce the number of different organisms, decreasing biodiversity.