Ecosystem Dynamics: Resources, Interactions, and Human Impact

A species reaches its carry capacity when it consumes a particular resource at the same rate at which the ecosystem produces it. This resource is then called a _____ resource. a) Limiting b) New c) Nonrenewable d) Protected

Some of the ways populations protect and divide the available resources is through a order of merit or pecking order, an example of this is_____. a) Meal worms laying eggs in flour at different times b) A wolf pack with alpha leaders c) Zebra on a grassy plains d) Fish feeding on other fishes eggs

Another means of protecting resources is by defending an area to keep out other competitors. This is called _____. a) Dominance b)Limiting resource c) Territoriality d) Ambush

There are four ways that species interact, which of these is NOT one of those four? a) Predation b) Parasitism c)Mutualism d)Cross species propagation

Which of the following is an example of competition between species? a) Two species of insects feeding on the same rare plant b)Abobcat hunting a mouse c)Alichen, which is an alga and a fungus living as a single organism d)Atick living on a dog

Which of the following statements about parasitism is NOT true? a) the presence of a parasite does not affect the host b)Parasitism is a cooperative relationship c) Parasites always kill their hosts d)Parasitism is similar to predation

Human growth stayed fairly stable until the 1800‘s, about the beginning of the __________. a) Bronze age b)Industrial revolution c)Iron age d)Agricultural revolution

The study of human populations, including size and makeup in a specific country is called _____. a) Geography b)Peopleology c) Demography d)Ethnicology

The distribution of ages in a population at a certain time is called _____. a) Age structure b) Survivorship c) Life expectancy d) Fertility rate

The number of children born each year per 1,000 women of a population is the _____. a) Life expectancy b) Survivorship c) Age structure d) Fertility rate

Migration is a major factor in stabilized countries growth, people moving out of a country is called ___. a) Immigration b)Migration c)Emigration d)Running away

When people move into a country it is called _____. a) Immigration b)Migration c)Emigration d)Integration

In 2050 which population group is projected to grow the most? a) Whites b)Blacks c)Hispanic d)Asian

Life expectancy is most affected by _____. a) Infant mortality b)Bad food c)Good water d)Lack of sun exposure

A characteristic of today’s population, is that disease can spread very rapidly. Why? a) Density b)Diversity c)Mixing of races d)Young age

Human population growth accelerated in recent centuries because of_____. a) The bubonic plague b)Better hygiene and food c)Electricity d)Improved efficiency of fuel use

A report from the WHO that reports on the estimated number of days of healthy life lost to death and disease is called the _____. a) Death/ Day Report b)Poor Health Report c)World Well Day Report d)HLLDD Report

_____ is the study of the harmful effects of substances on organisms. a) Epidemiology b)Toxicology c)Parasitology d)Virology

The amount of a harmful chemical to which a person is exposed is called a _____. a) Bite b)Swab c)Dose d)Shot

A chemical that take a long time to break down in the environment is called a _____ chemical. a) Irritating b)Hardy c)Nuisance d)Persistent

_____ is the study of the spread of diseases. a) Spreadability b)Flow paths c)Epidemiology d)Risk assessment

_____ is an estimate of the possibility of negative results caused by exposure to a substance. a) Spreadability b)Flow paths c)Epidemiology d)Risk assessment

Which is a natural cause of pollution? a) Burning fossil fuels b)Volcanic eruption c) Spilled sewage d)Soapy water

Which is the most common natural pollutant? a) Heavy metals b) Floods c) Particulates d)Smog

Pollution from human activities falls into four categories. Which type puts many particulates into the air? a) Waste disposal b)Industrial chemicals c)Burning fuels d)Pesticides

Ecosystem Dynamics: Resources, Interactions, and Human Impact