Population
The departure of individuals from a given area is called_______
emigration
Which is not one of the 4 environmental hazards?
biological
social
emotional
physical
emotional
In the history of the world, how many mass extinction events have occurred?
5
Name ways that infectious diseases are spread
land
humans
animals
What does the Living Planet Index track?
Species decline
Population growth is typically reported as a net change per _______ individuals.
1,000
Where can outdoor chemical hazards be located?
in air
in water
on land
When the environment changes too quickly for an organism to adapt, what will occur?
extinction
Toxicity depends on what?
What the substance is
How much of a substance is needed to cause harm
Earth's ecosystems provide at least _____ dollars worth of ecosystem services per year
$33 trillion
Which type of survivorship curve has the highest mortality rate for young members of the population?
III
Scientists calculate risk assessment by calculating the probability of ____________________
Death
Which of the following is not a mechanism for biological evolution?
mutation
genetic drift
inheritance of acquired characteristics
natural selection
inheritance of acquired characteristics
Name two ways that diseases emerge?
increasing mobility
antibiotic resistance
environmental change
What are the three (3) ages represented in an age structure diagram?
pre-reproductive
reproductive
post reproductive
Which is an example of a density-dependent factor?
fires
competition
landslides
tsunamis
competition
What are POPs?
persistent organic pollutants
speciation caused by geographic separation of populations is called _______ _______________
allopatric speciation
Why are emerging diseases particularly dangerous?
we have little to no resistance to them
What factors are taken into account when assessing risk?
what the hazard is
how often humans will be exposed to it
how sensitive individuals are to the hazard
What accounts for almost half of all deaths in developing nations?
infectious diseases
Name 3 of the main types of disasters
earthquakes
avalanches
volcanoes
storms
What best describes a successful individual in evolutionary terms?
They are well adapted to their environment and produce offspring that survive to pass on genes.
What do epidemiologists study?
how diseases occur
where diseases occur
how to control diseases
Which disruptor(s) interferes with the body system that sends and receives chemical signals called hormones.
endocrine disruptors