History[ edit ] Originally used with a different meaning, the term took its current definition after Lwoff and collaborators They can be contrasted with chemotrophs that obtain their energy by the oxidation of electron donors in their environments.
Phenomenon which can cause loss of life, injury, disease, economic loss, or environmental damage. Headlands A strip of land that juts seaward from the coastline.
This feature normally bordered by a cliff. Heat Heat is defined as energy in the process of being transferred from one object to another because of the temperature difference between them.
In the atmosphereheat is commonly transferred by conductionconvectionadvectionand radiation. Heat Capacity Is the ratio of the amount of heat energy absorbed by a substance compared to its corresponding temperature rise. A form of energy created by the combined internal motion of atoms in a substance.
The dome of relatively warm air which develops over the center of urbanized areas. Movement of water within a stream that occurs as spiral flows. A nonwoody angiosperm whose above ground vegetation dies off seasonally.
Herbivore Heterotrophic organism that consumes plants for nutrition. Also known as a primary consumer. Also see detritivoreomnivorescavengerand carnivore. The transmission of behavioral, physiological and morphological characteristics from parent to offspring. State of being dissimilar or diverse.
Heterosphere The upper layer in a two part classification of the atmosphere based on the general homogeneity of chemical composition. In this layer, oxygen atoms and nitrogen molecules dominate and remain constant in their relative quantities.
The heterosphere extends upward from a height of 80 to kilometers depending on latitude. Below this layer is the homosphere. Heterotroph Organism that must consume energy rich organic molecules for survival.
Energy is released from these molecules through the chemical process respiration. Also see carnivoresherbivoresand detritivores. Concerned with a complete system. Holocene Epoch Period of time from about 10, years ago to today.
During this period glaciers retreated because of a warmer global climate. Time of modern humans. A constant or non-changing state of equilibrium in a system despite changes in external conditions. Homosphere The lower layer in a two part classification of the atmosphere based on the general homogeneity of chemical composition.
In this layer, nitrogen, oxygen, argon, carbon dioxide, and the trace gases dominate and remain constant in their relative proportions. Above this layer is the heterosphere. Horizon 1 A surface separating two beds in sedimentary rock.
Four major horizons are normally found in a soil profile: A, B, C, and O. Pyramidal peak that forms when several cirques erode a mountain from three or more sides. Horst Fault A fault that is produced when two reverse faults cause a block of rock to be push up. Hot Spot A volcanic area on the surface of the Earth created by a rising plume of magma.
Organism that develops disease from a pathogen or is being feed on by a parasite.heterotroph an organism dependent on obtaining organic food from the environment because it is unable to synthesize organic material. All animals, fungi, many bacteria, plants without chloroplasts and a few flowering plants (such as insectivorous plants) are heterotrophs, and they obtain almost all their organic material, either directly or.
(used relatively in restrictive clauses having that as the antecedent): Damaged goods constituted part of that which was sold at the auction.
(used after a preposition to represent a specified antecedent): the horse on which I rode. (used relatively to represent a specified or implied antecedent) the one that; a particular one that: You may choose .
Habitat Location where a plant or animal lives. Hadean Geologic eon that occurred from to million years ago. The Earth's oldest rocks date to the end of this time period. Hadley Cell Three-dimensional atmospheric circulation cell located at roughly 0 to 30° North and South of the equator.
Start studying Heterotroph Hypothesis. Learn vocabulary, terms, and more with flashcards, games, and other study tools. heterotroph hypothesis a hypothesis suggesting that the first organisms were HETEROTROPHS.
A heterotroph (/ ˈ h ɛ t ər ə ˌ t r oʊ f, -ˌ t r ɒ f /; Ancient Greek ἕτερος héteros = "other" plus trophe = "nutrition") is an organism that cannot produce its own food, relying instead on the intake of nutrition from other sources of organic carbon, mainly plant or animal matter.