If you looked for your friend based on the color of their clothes
Eating + searching for food
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looking for something based on it's size and/or color
optimal foraging theory
less work for more food
sending of, reception of, response to signals
Few offspring, stable population
K cups are expensive
Lots of offspring, unstable population
Number of species in a community
Deep deep ocean
Process of healing ecosystems
Global warming caused by
World population is
growing, but slowed
Short and wet summer
Thin ozone layer ->
skin cancer rates go up
individual's likelihood of being alive as a function of age
chaparral biome characteristics
many plants with seeds that need fire to germinate
A tidal wave wipes out the entire population of mice living on an island
Yukon to Yellowstone Initiative
corridor for travel
connects isolated patches
The greatest annual input and least seasonal variation in solar radiation occurs in the
The level of ecologic organization that incorporates abiotic factors is the
proportion of individuals in different age groups
global warming will result in the oceans
being more acidic
If an overlap develops between the ranges of two closely related species
one species will take over
kin selection in action
paying your brother, who may not be able to pay you back
Using living organisms to clean up polluted ecosystems
Chaparral vegetation occurs around much of the central valley of central and southern California. This biome is very similar to that found
Approximately ________ living species have been named and described.
What type of behavior would explain the ability of the salmon to return to their home streams?
very cold winters
only the upper layer of the soil thaws during summer
About one-third of all animal and plant species are concentrated on ________ of Earth's land.
Many desert animals
The dominant herbivores in savannas are
Total of a population's use of biotic & abiotic resources
A regional assemblage of interacting ecosystems is a
To decrease pollution from sulfur, your local power plant built very tall smokestacks. The ultimate consequence of this would most likely be
to create an environmental problem at a distance from the power plant.
A blue jay hides hundreds of nuts throughout the fall and finds them throughout the winter and spring. The blue jay is most likely finding the stored food by using
Organisms that digest molecules in organic material and convert them into inorganic forms are
The current rate of extinction may be as much as ________ times higher than at any other time in the past 100,000 years.
While on a walk through a forest, you notice birds in trees, earthworms in the soil, and fungi on plant litter on the forest floor. Based on your observations, you conclude that each of these organisms occupies a different
Human social behavior appears to be
a product of our genes, external influences, and environment.
The kind of vegetation in a tropical rain forest is generally determined by the amount of
Which of the following environmental factors usually has the greatest direct effect on an organism's rate of water loss by evaporation?
A demographic tool used to predict a population's future growth is
In many dense forests, plants living near the ground level engage in intense competition for
Habitats with many edges
often result from human activities.
In terms of global air circulation, the tropics are a region where air
rises and cools
which of the following types of information will be communicated to other workers by a honeybee's "dance"?
direction of nectar source
the genetic diversity within and between populations of a species.
From a sociobiological perspective, altruism is a behavior that
has the potential to enhance the altruist's fitness at a later point in time.
One of the most worrisome results of the large-scale clearing and cultivation of land is
Which of the following has the greatest impact on the global water cycle?
destruction of forests
Protecting the endangered black-footed ferret from extinction involved
adaptation of pronghorns
to open country could be a disadvantage in a densely forested environment.