Darwin's Discoveries
What is the term for “survival of the fittest”?
Natural Selection
What type of symbiosis benefits both organisms?
Mutualism
Which two body systems regulate the digestive system by sending signals and releasing hormones?
Endocrine and Nervous Systems
What is the ability of an organism to survive and reproduce in its environment?
Fitness
What type of selection leads to giraffes developing longer necks over time?
Natural Selection
A population of birds becomes separated by a river and evolves into two different species. What is this process called?
Speciation
In an energy pyramid, which level receives the least amount of energy?
Top Predators
How does the circulatory system help heal an open wound?
Delivers oxygen, transports waste, and increases white blood cells
What is the movement of alleles between populations called?
Gene Flow
Why do green beetles survive better than brown beetles in certain environments?
They are better adapted/fit for the environment
Which type of evolutionary process increases genetic variation through the exchange of genetic information during reproduction?
Genetic Recombination
What happens to kelp forests when sea otter populations decline due to increased predation?
They become less stable
Which two systems interact when the circulatory system transports CO2 for release?
Circulatory and Respiratory Systems
What kind of structure is a vestigial structure?
A structure with no current function but was useful in an ancestor
Why do antibiotic-resistant bacteria become more common after exposure to antibiotics?
Bacteria with resistance survive and reproduce, passing on the resistant trait
Dolphins develop hind limbs during early stages of development but lose them later. What does this suggest about their ancestors?
They had hind limbs
What is the first consequence of removing all heterotrophs from the carbon cycle?
Decrease in atmospheric carbon
Which organ controls the circadian rhythm that helps regulate digestion?
Brain
A group of lizards gets separated by a mountain range and over time becomes two distinct species. What is this an example of?
Speciation
What kind of symbiosis harms one organism while benefiting the other?
Parasitism
What mechanism of evolution is demonstrated when Texas pumas introduced genetic diversity to Florida panthers?
Gene Flow
How does biodiversity contribute to the stability of an ecosystem?
Greater biodiversity increases resilience and helps maintain balance
What type of signal does the nervous system send to glands to regulate nutrient absorption?
Electrochemical Signals
A descendant with modification from a common ancestor is called...
Evolution
What do the fossil record and layers of rock tell us about ancient environments?
They show changes in species and habitats over time