Why are populations that are more diverse usually more stable? (2 pts)
My answer: Populations that are more diverse are more stable because they won't be as effected if a species dies out. For example, lets say a plant species dies out in a very diverse habitat, the species that use plants for food would still have other plants while in a less diverse habitat, the herbivores or omnivores would start to go hungry.
Why would a diverse population be more resistant to disease, predation, and invasion? (2 pts)
More diverse populations are difficult to invade due to the number of species, same goes with predation. For disease, the fact that there are so many DIFFERENT species makes them more immune.
There are many human-caused losses of biodiversity, such as habitat destruction and introduction of invasive species. Are there any natural events that could alter the diversity index? If so, name 1 and explain how it would alter the diversity index. (4 pts)
A wild fire could start, burning and wiping out plants other species use for food and homes. Without their food and homes along with the danger of the fire, the next species will die off. The bigger species that used the other species for food will now die off due to starvation. After the fire it would be difficult to restore the habitat.
. How and why do invasive species change the diversity index? (3 pts)
The invasive species would cause the diversity index to decrease, being invasive it would take over the area.
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