Loops that cause a response to build up and build up until something big happens are called ____________ loops

Labor during pregnancy is an example of a ____________ feedback loop

Blood clotting is an example of a ____________ feedback loop

The heater kicks on and the house warms up, so it kicks off. Then the house cools a bit and the heater kicks back on. This continues all day. It's a _____________ loop.

Most of the body's feedback loops are ____________ loops.

Blood sugar regulation is an example of a ______________ loop

Body temperature regulation is an example of a ______________ loop

In a positive feedback loop, each action creates a consequence that _____________________ the other action.

When the population of deer in an area begin to grow, they start overgrazing the vegetation that feeds them. When there is not enough vegetation to sustain the rapidly growing deer population, they will begin to die off until the vegetation grows back to normal levels and the deer will have enough food to repopulate again. 

A organization posts an advertisement with a very "click-baity" title and image on a social media platform. The title and image draw in people to click on the ad. As the ad receives more views, the algorithm shows the ad to more people.

In some developing countries poverty causes illness and contributes to poor standards of education. In the absence of knowledge of family planning methods and hygiene, this contributes to population growth and illness, adding further to the causes of poverty; “a vicious circle of poverty.”

Does the graph show positive or negative feedback?

The things that are changing in an experiment

The one thing that a scientist changes in their investigation

What the scientist is measuring in their investigation. 

What is a constant in an experiment?

What would the independent variable be in an experiment testing which type of paper airplane goes the furthest?

This part of the experiment serves as a basis of comparison:

A species that plays a critical role in the health, maintenance, growth, or definition of an ecosystem.

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

What type of growth is this graph representing

What type of growth is this graph representing?

Biotic or Abiotic factor that restricts the growth of the population

In the graph to the right, what is the population of deer at the carrying capacity of the environment?

What happens if a population grows past its carrying capacity?

Long life span

many years to reach reproductive maturity

many reproductive events

many offspring

size of offspring is small

substantial parental care is given

population growth rate is fast

population growth rate is slow

population dynamic; stable, near carrying capacity

elephant

mosquitos

Organisms with the “best” traits (adaptations) will live longer and reproduce more than others, causing changes in the population over time by acting on traits that are heritable.

A measure of how well you can survive in your environment

Lots of offspring and limited resources causes competition for those resources.

differences in the physical traits of organisms

a feature that allows an organism to better survive in its environment.

A change in gene frequency over time.

any change in a DNA sequence

Having a large beak in an environment that needs the large beak to survive is an example of ______________.

individuals with alleles for an extreme type are more likely to survive and reproduce

the selection pressure favors the extreme phenotypes, dividing the population into 2 distinct groups

Individuals with intermediate traits are more likely to survive and reproduce

Tall kelp have a distinct advantage over shorter kelp in receiving needed sunlight in their ocean environment

Aspen trees that are over 25 m tend to blow over in high winds; aspen that are under 15 m don't get enough sun

snails with a forward spiral and snails with a backward spiral have an advantage in their environment

Light-colored oysters would blend into the rocks in the shallows, and the darkest would blend better into the shadows. The ones in the intermediate range make them easier prey.

Label the natural selection graphs correctly...

Starlings produce an average of five eggs. If there are more than five the parents cannot adequately feed the young. Fewer than five and predators may destroy them. As a result, five eggs becomes the most common number.

A population of Madagascar hissing cockroaches lives in a woodpile. The cockroaches are eaten by lizards. Because the lizards have small heads, the lizards are unable to eat the very largest adult cockroaches, and instead prey upon small and medium sized adults. Over time, only the large headed lizards survive.

Female birds that lay close to the optimum number of eggs have the most surviving offspring. Those that lay fewer or more eggs have lower relative fitness.