The Arctic
The national park in Canada where 3 bear species were spotted in the same location
What is Wapusk National Park
This species of bear has proven to be the most aggressive of the three we studied in class.
What are brown bears?
These two things happened when polar bears were put on treadmills with increased speed.
What is their body temperature increased and they took frequent breaks?
A type of diagram that is used to show how closely related different species are to each other.
What is a phylogenetic tree?
This process, over long periods of time, can lead to speciation. It is the only mechanism of evolution which leads to species being well suited for their environment.
What is natural selection?
These three biomes exist in the national park in Canada where the bears were spotted
What are sea ice, tundra, and woodlands?
This species of bear spends most of its time in the woodlands
What are black bears?
This is what happened to human body temperature when exercising.
What is it stayed the same or slightly decreased?
This mixture of two different species makes classification very difficult
What are hybrids?
What are interglacial periods?
These three bear species were spotted together for the first time on trail cameras.
What are brown, polar, and black bears?
This species of bear does not hibernate unless birthing young.
What are polar bears?
This term refers to maintaining a stable internal environment
What is homeostasis?
This species of bear is least similar genetically to the other two.
What are black bears?
The number of glacial periods the arctic has gone through over the past 700,000 years
What are seven?
This type of ice in the arctic persists year round
What is permanent ice?
This type of feedback mechanism is common in body systems to help maintain a stable internal environment.
What is negative feedback?
The nodes on a phylogenetic tree represent this.
What is a common ancestor?
The oldest fossil of this species dates back 550,000 years in France.
What is a brown bear?
If human greenhouse gas emissions continue at the current, high rate they are being released, the Arctic could be ice free as early as this year.
What is 2050?
This species of bear can swim.
What are all 3 species?
The NOS3 gene causes this chemical to increase in concentration in the bloodstream, leading to more heat being released during cellular respiration.
What is nitrous oxide?
This event happened to a species if their branch stops before reaching the end of a phylogenetic tree or cladogram.
What is extinction?
Two organisms belong to the same group if they can reproduce making viable, fertile offspring.
What is the biological species concept?