Heavy rains in northern Africa that allow locusts to either grow or reproduce rapidly and then devastate crops is an example of how -dependent effects can be dramatic.

What is an example of a disturbance?Group of answer choicesLandslidePlague of locusts (massive herbivore grazing)All of the answersFire

A/an __________ of locusts has completely __________ all the vegetation over thousands of miles of land, leaving the farmers bankrupt and devastated.

True or false: Density-dependent effects, such as insect population growth rates, can be dramatic.True false question.TrueFalse

What are some consequences of climate change mentioned in the passage?Extinctions of speciesExtreme weather eventsDecreased rainfallIncreased rainfall

Foragers today who live in southern Africa's Kalahari Desert know that a drought or war can threaten their community's survival. In a desert environment like the Kalahari, there is huge spatial and temporal variability in resource distribution. It can be very rainy in one season and in the next absolutely dry, or it can be very rainy in your area and then 10 kilometers away, it's just nothing. To mitigate these risks, they enter into partnerships with kin in other territories, both near and far, so that ______________15Mark for ReviewABCWhich choice most logically completes the text?Aif they have a bad year, they can head to another area to gather water and food.Bfinished beads made from ostrich eggshells could be traded to ensure cooperation during tough times.Clong-distance movements of utilitarian items could be used as a way to adapt quickly to different environmental scenarios.Ddiversity of resources could be ensured during a period of climate instability.