The northeastern two-thirds of illinois, in the midwestern united states, was last covered by glaciers only 14,000 years ago. the rest of the state was last covered by glaciers over 100,000 years ago. until the advent of modern agriculture, the recently glaciated area was a broad, grassy swamp, cut by very few stream channels. in contrast, the area that was glaciated over 100,000 years ago is not swampy and has been cut by numerous stream valleys. why? geology question

Afood web shows who eats who in any given habitat. every living thing, from one-celled algae to giant blue whales, needs food to survive. each food web is a possible pathway that energy and matter can follow through the habitat. a food web begins with producers: organisms that convert sunlight into usable chemical energy. the food web is completed by the decomposers who turn organic wastes, such as decaying plants, into inorganic materials, such as nutrient-rich soil. decomposers complete the cycle of life, returning nutrients to the soil or oceans for use by producers. in this food web, identify the decomposer.

May all the sweet magic of christmas conspire to fill every desire..❤️ merry christmas! ❤️_❤️

In an ecosystem, marsh snails feed on phytoplankton and painted turtles feed on marsh snails. pollution has resulted in the depletion of phytoplankton. what effect would this situation likely have on the population of marsh snails and painted turtles? as phytoplankton were destroyed, the population of marsh snails would most likely then the population of painted turtles would mostly likely a. 1. increase 2. decrease 3. stay the same b. 1. increase 2. decrease 3. stay the same