HS-LS2-2
Use mathematical representations to support and revise explanations based on evidence about factors affecting biodiversity and populations in ecosystems of different scales.
- Animals
Explainer: People can sicken animals
Wildlife can sometimes become infected with germs shed by people.
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- Animals
An enemy in the cave
Bats under attack from a fungus send scientists searching for clues to solve a deadly mystery.
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- Climate
Arctic algae show climate change
Sediment from Arctic lakes shows that much of the Northern Hemisphere has been warming for many decades.
- Environment
Alien invasions
Around the world, plants, animals, fungi, and other life forms are ending up in places where they don't belong.
- Environment
A vulture’s hidden enemy
Vultures may be getting a deadly dose of medicine from the carcasses they feed upon.
- Animals
A hangout for elusive blue whales
Scientists have now found a place off southern Chile where blue whales gather.
- Animals
Baboons listen for who’s tops
Baboons can tell who's in charge by the sound of voices alone.
- Animals
City birds hit the high notes
Some songbirds battle traffic noise by singing at a higher pitch.
- Animals
Ant invasions change the rules
Ant invaders may wreck the rules by which entire communities of their peers work.
