Create an account
What property of water is due to hydrogen bonds?
cohesion, temperature change resistance, floating ice, ability to hold in solution or dissolve many other vital chemicals for life
Which of the following describes a property of water?
cohesion, hydrogen bond, resistance to temperature change
Bacteria use ___ to break down hydrocarbons during bioremediation, just as we use them to digest food.
Early Earth (4.5 billion years ago) ___.
severe volcanic and tectonic activity, intense ultraviolet energy from sun, no life, no oxygen until photosynthesis
The ___ hypothesis, proposed in the 1930s, says that carbon dioxide, oxygen, and nitrogen dissolved in Earth's water formed simple amino acids and eventually complex organic compounds that self-replicated.
The ___ hypothesis, proposed in the 1970s and 1980s by Jack Corliss and others, suggests that life on Earth originated in the deep sea where sulfur was abundant.
Consider the following processes: respiration, chemosynthesis, combustion, fermentation, polymerization, and photosynthesis. How many of these result in the release of oxygen into the atmosphere?
Over many years, the population of finches on an island ___.
May have mutations that make them more able to survive, become new species through allopatric speciation.
The hawks on an island have always eaten insects, lizards, and mammals, but they find the brightest yellow finches to be easy prey as well. Over many years, the population of finches on the island ___.
may develop a mutation that protects it from predation/dying out, may be victims of flow artificial selection.
The two processes that determine the world's current biodiversity are ___.
speciation and extinction
Endemic species ____
are species that occur nowhere else on earth and have relatively high risk of extinction
High population density can ____
make it easier for organisms to group together and find mates, lead to conflict and competition
Age pyramids, used to show the age structure of a population, generally ____
predict demographic patterns in the future of the population
Heavy rains and mudslides cause a river to change course, isolating two groups of lizards from one another. Over a long period of time, ____.
allopatric speciation might occur, create two different species that each run their own genetic mutating DNA
A small moth pollinates native trees when they bloom in April. Some of the moths emerge in early March and discover a different blooming shrub to use as a resource. This is an example of what, over time, could be ____.
Habitat selection, DNA mutation
In a population of field mice, an example of an adaptive trait that could help with reproduction and/or survival would be ____
to be faster, ID poison, blend in more, be smaller, have a largely diverse diet
A number of coyotes move into an area and begin to eat a population of small harvest mice. After several years, the harvest mice are much speedier runners than before the coyotes came. This is an example of ____
a genetic/biological mutation due to natural selection
An example of a density-independent factor would be _____
temperature changes, only change that is not direction caused or is resulted direction by the population density
A coyote, which can alter its food intake to match seasonal abundance of plants, fruits, or small animals, is considered to be ____
A species has evolved an asexual mode of reproduction by having offspring develop from unfertilized eggs. Which of the following will be true of this species' response to natural selection?
less mutation, won't adapt through natural selection
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together