This organ is mainly responsible for absorbing nutrients.
What is the small intestine?
100
The sum total of the variety of organisms in the biosphere.
What is biodiversity?
100
This type of isolation leads to the formation of a new species.
What is reproductive isolation?
100
This is the energy source for most producers.
What is sunlight?
100
This biogeochemical cycle is affected by burning trees and oil.
What is the carbon cycle?
200
Bacteria and fungi are both ___.
What are decomposers?
200
This process occurs during prophase and increases the amount of genetic variation in a population.
What is crossing over?
200
A population of squirrels becomes separated by water. They can no longer mate with each other. This type of isolation has occurred.
What is geographic isolation?
200
(True or False) Energy is endlessly recycled in the biosphere. Explain your answer.
False. Organisms require a constant supply of energy because it is "lost" as heat.
200
The negative impact that can be caused by the introduction of a new predator into an ecosystem.
What is collapse?
300
A diagram that shows the linear relationship between organisms that eat and are eaten.
What is a food chain?
300
The fact that bat wings, dolphin flippers, and alligator legs have similar bone structures suggests that these organisms have this.
What is a common ancestor?
300
Two populations of birds live in the same area, but do not recognize each other as potential mates because they sing different songs. This type of isolation has occurred.
What is behavioral isolation?
300
This trophic level contains the most energy.
What are the producers?
300
Explain how industrialization in England affected the peppered moth population.
Darker coloring became favored over lighter coloring.
400
A diagram that shows the complex interactions formed by the feeding relationships among organisms in an ecosystem.
What is a food web?
400
This is increased via sexual reproduction (as opposed to asexual reproduction).
What is variation?
400
Three species of orchid (flowering plants) release pollen on different days, so they cannot pollinate one another. This type of isolation has occurred.
What is temporal isolation?
400
This is what would happen to an ecosystem if the producers were removed.
What is collapse?
400
DAILY DOUBLE
Provide an example of humans decreasing the amount of variation in a population.
Monoculture-growing only one type of plant in a large area.
500
The relationship between two groups of animals in which one species hunts, kills, and eats the other.
What is predation?
500
Darwin's finches had different beak sizes according to the type of food they ate. These differences made each population of finches more suited to its specific environment. This is the evolutionary term used to describe the finches' beak size.
What is an adaptation?
500
This type of reproduction does not require that an organism find a mate in order to produce offspring.
What is asexual reproduction?
500
(True or False) All life on Earth is dependent upon the sun for energy. Explain your answer.
False. Chemosynthetic organisms rely on inorganic compounds (not sunlight) for energy.
500
If the amount of water on the planet is constant, how can we be running out of water?
Pollution; the water is concentrated in different areas; the water may be in a different phase (solid or gas).