AcDec Science Section I Part 2

Descrição

This is part 2 of section 1 for science
stegover
FlashCards por stegover, atualizado more than 1 year ago
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Resumo de Recurso

Questão Responda
Organic matter _________ slowly in the cold, ________ _____ on the forest floor Decomposes ; Building Up
Fires during summer droughts can burn through the forest floor for _______ or ________ Months ; Years
Conifers that can withstand winter freezes grow in the _______ _______ Boreal Forest
Tundras above ____ latitude no longer feature trees 65°
The topsoil ________ in winter and _______ in summer Freezes ; Thaws
A permanently frozen layer of soil called ___________ chills the topsoil, limiting plant and microbe growth Permafrost
 Simple short vegetation including _______, ______, _______, and _______ grow here Sedges ; Grasses ; Forbs ; Shrubs
Tundras occur in the ______ and the ________ _________ Arctic ; Antarctic Peninsula
 The order of biomes from the equator to higher latitudes is Tropical Forests Hot Deserts Deciduous Forests Boreal Forests Tundra
The ______ of a species marks the areas where it is found Range
The dispersal of _________ within that range depends on ________ ________ Individual ; Resource Availability
The set of optimal conditions for a niche species in its environment determined by natural selection describes a species ________ ________ Ecological Niche
The fixed geological area where an organism can most easily grow and reproduce describes an organisms __________ __________ Fundamental Niche
The actual range of individuals within its fundamental niche describes an organisms _______ ______ Realized Niche
_________ _________ drives the evolution of populations over time Natural Selection
Natural Selection ensures the transmission of traits _________ for the organism’s ________ to future generations Favorable ;
Over time, a species will _______ more and more from its ancestors as it _______ to its environment Differ ; Environment
An organism's ___________ involve responses to the ___________ of a particular environment Adaptations ; Challenges
 Evolution involves changes in an organism’s ________ _________ Genetic Information
 Genetic information is stored as _______________ ______, also know as _____ Deoxyribonucleic Acid ; DNA
 DNA stores instructions for the creation of ________ by the body Proteins
 Every gene has _____ ____ _____ that code for different forms of a protein 2 or More
 Each form of a specific gene is called an allele Allele
In _________ __________, the offspring receives one set of alleles from the mother and one set from the father Sexual Reproduction
 The specific combination of alleles in an organism comprises its _________ Genotype
Alleles code physical features called the phenotype Phenotype
_______ __________ in a population will shift as alleles that produce useful adaptations are passed on Allelic Frequencies
Charles Darwin described the causes of natural selection in his book : ____ _______ ___ ________ The Origin of Species
________ variations must exist among the individuals of the species Heritable
Genetic variations affect the _______ and reproduction rates of the individuals Survival ; Reproduction
________ ________ involve a population’s interactions with each other Population Dynamics
Population Dynamics determine the population ______ and ___________ Size ; Abundance
Population size measures the ________ of organisms Population abundance measures the _________ of individuals Amount ; Density
________ ________, ________ ________, and ___________ ___________ all alter population size Resource Availability ; Organism Movement ;
A patchy, disconnected habitat limits population ________ Dispersal
_________ whales might travel ____ ________ kilometers to reach their breeding grounds Migratory ; Ten Thousand
Only one mammal, the _____ ____, has been able to disperse to Hawaii Hoary Bat
________ ________ determines the type of population distribution Resource Availability
Natural populations with patchy habitats typically form _______ ____________ in a metapopulation Clumped Distributions ; Metapopulation
Occasional _________ and _________ occur between the subpopulations of a metapopulation Migrations ; Interactions
_____ and _____ _____ control population size and abundance in the subpopulations Birth, Death ; Rates
The metapopulation’s size depends on the balance between ___________ __________ and the ___________ of new patches of habitat Subpopulation Extinctions ; Colonization
The proportions of each age group in a population forms its _____ _________ Age Structure
_________ birth and survival rates at each age level creates stable growth Constant
Carefully altering _______ _______ at each age level can manage population size Survival Rates
A population with many young individuals will ______, while a population with many old individuals will likely ______ Grow ; Decline
Kenya, Nigeria, and Saudi Arabia are countries experiencing ______ growth Rapid
The United States, Australia, and Canada are countries experiencing ______ growth Slow
Denmark, Austria, and Italy are countries experiencing ______ growth Zero
Germany, Hungary, and Bulgaria are countries experiencing ________ growth Negative
Population growth follows _________ patterns Predictable
Populations that reproduce in fixed intervals, such as annual plants, grow ____________ Geometrically
Populations, such as India's at the moment, that reproduce constantly, grow ____________ Exponentially
The _______ most populated nation, India had over _________ people in 2014 Second ; 1.25 Billion
More than half of the population of India is under ____ years old 25
India has a high annual population growth rate of ______ percent 1.41
By ______, India will be the world’s most populated country 2028
As the population grows to the maximum number of individuals the environment can support, population growth rates decrease in _________ _______ Logistic Growth
The maximum number of individuals an environment can support is called the _______ ________ Carrying Capacity
Carrying capacity depends on ________ ________ Resource Availability
Many factors limit population _____ and prevent _______ growth Size ; Unlimited
Density independent factors limit population growth regardless of _____ Size
Extreme conditions like hurricanes, fires, and floods are examples of ________ ________ ________ Density Independent Factors
_________ _________ factors impact the growth rate in proportion to the size of the population Density Dependent
Competition, crowding, disease, and stress have more impact in _______ ___________ sizes Higher Population
Density dependent factors tend to promote _______ at low population sizes Growth
Density dependent factors limit growth when the population size nears the _________ _________ Carrying Capacity
__________ interactions occur between members of the same species Intraspecific
_________ _________ cause competition and stress, which are density dependent factors Resource Limitations
Animals develop _______ and _______, while plant _______ and _______ production decreases Diseases, Parasites ; Growth, Seed
__________ interactions occur between individuals of different species Interspecific
Resource limitations decrease the ________ ______ of all individuals in the species, potentially leading to ________ Survival Rate ; Extinction

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