high microbial population
81Evolution — This article is about evolution in biology. For other uses, see Evolution (disambiguation). For a generally accessible and less technical introduction to the topic, see Introduction to evolution. Part of a series on …
82Bioaccumulation — refers to the accumulation of substances, such as pesticides, or other organic chemicals in an organism. [1] Bioaccumulation occurs when an organism absorbs a toxic substance at a rate greater than that at which the substance is lost. Thus, the… …
83Omnivore — Ravens are omnivores. Omnivores (from Latin: omni all, everything; vorare to devour) are species that eat both plants and animals as their primary food source. They are opportunistic, general feeders not specifically adapted to eat and digest… …
84Scientific opinion on climate change — This article is about scientific opinion on climate change. For public perception and controversy about the scientific consensus, see Public opinion on climate change and Global warming controversy. For opinions of individual dissenting… …
85Antipredator adaptation — A lone bison is standing its ground against a pack of wolves, thereby increasing its chance of survival Antipredator adaptations are evolutionary adaptations developed over time, which assist prey organisms in their constant struggle against… …
86Marginal value theorem — The optimal time spent in a patch is given by the tangent to the resource intake curve that departs from the expected transit time value. Any other line crossing the resource intake curve has a shallower slope and thus a sub optimal resource… …
87Oligotroph — An oligotroph is an organism that can live in an environment that offers very low levels of nutrients. They may be contrasted with copiotrophs, which prefer nutritionally rich environments. Oligotrophs are characterized by slow growth, low rates… …
88Generalist and specialist species — With its eucalyptus only diet, the koala can be considered a specialist species. A generalist species is able to thrive in a wide variety of environmental conditions and can make use of a variety of different resources (for example, a heterotroph …
89Detritus — For other uses, see Detritus (disambiguation). In biology, detritus is non living particulate organic material (as opposed to dissolved organic material). It typically includes the bodies or fragments of dead organisms as well as fecal material.… …
90Human impacts on the nitrogen cycle — Agricultural and industrial nitrogen (N) inputs to the environment currently exceed inputs from natural N fixation (Galloway 2003). As a consequence of anthropogenic inputs, the global nitrogen cycle (Fig. 1) has been significantly altered over… …
