Four examples of the effects of environmental change are given. match each one with the type of environmental change it demonstrates.

Answer: The answers are matched as follows:

African forests have been hunted to near extinction levels to obtain ivory>human exploitation

The eruption of mount Saint Helens destroyed some populations of conifers> natural disasters

An infection with a fungus reduced the population of North American Elm trees > disease

Increasing global temperatures have altered migration patterns of humpback whales >climate change

Explanation:

Human exploitation is the unethical or selfish use of resources to satisfy their own personal needs or for any profitable activity which harms the resources in such a way that they get limited. Humans have been hunting elephants to obtain ivory for many purposes such as making jewellery etc. and earning profits from it. Due to such extensive hunting they have driven the elephants to a level of extinction and thus, this is a form of human exploitation.Mount Saint Helens is a volcano and its eruption which harms the population of the trees in the area is a form of natural disaster since volcanic eruption is a natural phenomena.Fungal infection is a disease which is cause by the microorganisms which harms the population of the Elm trees.Increase of global temperature is a type of climate change and thus, this effect of alteration of migration pattern is caused by climate change.

Hunting in the darksome fish rely on senses beyond sight. in the darkness of the marianas trench, a fish called the rattail has an extremely sensitive sense of smell. the fish uses scent, rather than sight, to steer toward food. once it's near food, the rattail uses a special organ on the bottom of its chin to guide itself by feel.marine snowone staple of the deep sea diet is "marine snow," flakes of organic, edible substances that sink down from the upper ocean. animals at the ocean's bottom find sustenance in everything from the bodies of dead creatures to fecal matter. marine snow is diverse enough to support numerous species. for instance, several species of snails and worms feed exclusively on deceased whales.microorganismsthe deep sea is an intricate ecosystem, and even the ocean floor itself plays a part. hydrothermal vents are cracks in the sea floor where erupting magma mixes with ocean water to produce plumes of hot, sulfur-rich chemicals. some microbes can use these chemicals for energy, sustaining their existence and that of the animals who depend on their roles in the deep sea food chain.

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