Releasing carbon dioxide into the atmosphere causes this human impact.
What is greenhouse effect, global warming, global climate change
100
Salmon swim upstream every year to mate and die. This is an example of...
What is migration
100
As the prey population decreases, the predator population
What is decreases
200
In this type of symbiosis, both organism's benefit.
What is mutualism.
200
The organisms in the Carbon cycle that remove carbon from the atmosphere
What is producers, plants, autotrophs
200
When excess fertilizer is added to the soil, the runoff into lakes causes...
What is eutrophication
200
Many bacteria reproduce in a way that allows DNA to be copied exactly so that the offspring are sure to survive in their environment.
What is asexual reproduction.
200
This type of growth is free of limiting factors
What is exponential growth
300
Two organisms eat the same diet and live in the same habitat. These organisms most likely engage in...
What is competition
300
These organisms are necessary for converting nitrogen to a usable form.
What is nitrogen-fixing bacteria.
300
Noxious gasses in the air have caused this effect, which hurts aquatic wildlife the most.
What is acid rain.
300
Many amphibians will slow their metabolic functions in the summer in order to preserve energy and water.
What is estivation
300
This type of growth has a carrying capacity
What is logistic growth
400
Bees will spread pollen from flower to flower. In return, the flowers feed the bees with sweet nectar. This form of symbiosis is called.
What is mutualism
400
This trophic level has the lowest level of energy, but the highest concentration of toxins due to bioaccumulation.
What is tertiary consumers, quaternary consumers, top predators
400
The animals or plants are carried by humans into new territories where they have no natural enemies.
What is invasive species
400
In this behavior an organism makes a connection between two unrelated actions. For example, students get up at the sound of the bell.
What is classical conditioning
400
Snowshoe hares live in the coniferous forest. They have plenty of food and water so their population grows. In 1900 there are 50 hares, 1950 there are 100 hares and in 2000 there are 98 hares. The hares have reached
What is carrying capacity
500
Mosquitoes carry the protist Plasmodium which does not hurt them. However, Plasmodium causes malaria in humans. What is the symbiotic relationship between Plasmodium and humans?
What is parasitism
500
Hawks eat mice and mice eat plants. If the hawk population decreases, what will happen to population of herbivores?
What is increase
500
This leads to lower water and air quality and less resource availability.
What is overpopulation.
500
A moth flies towards the light.
What is phototaxis
500
Name one density-dependent factor in population growth
What is disease, lack of resources, fighting for territory