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scientific study of interactions among organisms and between organisms and their environment or surroundings
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contains the combined portions of the planet in which all of life exists, including land, water, and air or atmosphere
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Biology 2 exam set 3

1st 9 wks exam chapter 3

QuestionAnswer
scientific study of interactions among organisms and between organisms and their environment or surroundings ecology
contains the combined portions of the planet in which all of life exists, including land, water, and air or atmosphere biosphere
FIB: The biosphere extends from ___ kilometers about Earth's surface to as far as ___kilometers below the surface of the ocean 8; 11
a group of orgamisms so similar to one another that they can breed and produce fertile offspring species
groups of individuals that belong to the same species and live in the same area population
assemblages of different populations that lived together in a defined area communities
collection of organisms that live in a particular place, together with their nonliving, or physical, environment ecosystem
a group of ecosystems that have the same climate and similar dominant communities biome
FIB: the main energy source for life on earth sunlight
FIB: the sun's energy that reaches the earth's surface is about ____ percent used by living things 1
organisms that capture energy from sunlight or chemicals and use that energy to produce food autotrophs
FIB: organisms that can capture energy from sunlight ion chemicals and use it to produce food from inorganic compounds producers
process which plants and some other organisms use light energy to power chemical reactions that convert carbon dioxide and water into oxygem and energy-rich carbohydrates such as sugars and starches photosynthesis
when organisms use chemical energy to produce carbohydrates chemosynthesis
organisms that can rely on other organisms for their energy and food supply heterotrophs
hexatrophs? oonsumers
obtain energy y eating other plants herbivores
eat animals carnivores
eat both plants and animals omnivores
feed on plant and animal remains and other dead matter detritmores
break down organic matter decomposers
a series of steps in which organisms tranfer energy by eating and being eaten food chain
when the feeding relationships among the various organisms in an ecosystem form a network of complex interactions food web
each step in a food chain or food web trophic level
a diagram that shows that relative amounts of energy or matter contained within each tropic level in a food chain or food web ecological pyramid
total amount of living tissue within a given trophic level biomass
FIB: ___% of the body is made up of carbon, oxygen, hydrogen and nitrogen 95
list 4 things that make up 95 % of the body carbon, oxygen, hydrogen and nitrogen
the process by which water changes from liquid form to an atmospheric gas evaporation
loss of water from a plant through its leaves transpiration
all the chemical substances that an organism needs to sustain life nutrients
FIB: nitrogen gas makes up _____% of the earth's atmosphere 78
process to convert nitrogen gas into ammonia nitrogen fixation
other soil bacteria convert nitrates into nitrogen gas denitrification
the rate at which organic matter is created by producers primary productivity
when an ecosystem is limited by a single nutrient that is scarce or cycles very slowly limiting nutrient
when an aquatic ecosystem receives a large input of a limiting nutrient algal bloom
Created by: brandon_kyle10
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