By Pamela Walker
Ecology is the learn of the relationships among organisms and their dwelling and nonliving environments. This box of technological know-how could be divided greatly into parts: the connection among an organism and its nonliving atmosphere and the connection among an organism and different organisms.
Ecology Experiments offers scholars and lecturers with the instruments they should discover a variety of ecological matters. The 20 new, hands-on experiments during this publication enable scholars to profit extra approximately this well timed medical box. packed with vivid full-color illustrations, in addition to an index, word list, and print and internet assets, this obtainable new source is vital in technology classrooms.
Read or Download Ecology Experiments (Facts on File Science Experiments) PDF
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Extra info for Ecology Experiments (Facts on File Science Experiments)
Sample text
The two major types of food chains are the grazing food chain and the detrital food chain. Detritus is dead organic matter. Some of the primary consumers in grazing food chains include deer or elk feeding in a meadow, rabbits eating grasses, and grasshoppers devouring leaves. Even though these are the most obvious food chains, they are not the most common. Detrital food chains form the majority of paths through which energy is channeled. In the prairie, about three-fourths of the plant matter is returned to the soil where it decays.
In addition, a large percentage of the plant matter consumed by herbivores is returned to the soil as feces. In a detrital food chain, organisms that eat dead plant and animal matter are referred to as detritivores or saprophages. The primary saprophages are microscopic bacteria and fungi. Millipedes, mites, earthworms, slugs, and crickets are a few of the invertebrates that serve as saprophages. These animals are fed on by carnivorous invertebrates like spiders and beetles. The macrosaprophages and microsaprophages support each other.
3. What kind of organism formed the base of each food chain? In what direction does energy move through a food chain: consumer to producer or producer to consumer? indb 38 zooplankton (small animals floating in the water) seals whales large fish small fish phytoplankton (small, plant-like organisms floating in the water) 5/13/10 12:27:00 PM 6. Food Webs 39 grass stems caterpillar toad weed seeds gopher coyote cutworm grass seeds grasshopper weed stems weasel garter snake spider ground squirrel vole grass stems sparrow hawk Figure 2 4.