Homeostasis
What is homeostasis?
Maintaining stable internal conditions
What molecule carries genetic information?
DNA
What is a trend in data?
A pattern or direction
What is natural selection?
Survival of best-adapted organisms
Name one human activity that affects ecosystems.
Pollution, deforestation
Give one example of homeostasis in the human body.
Sweating, shivering, blood sugar regulation
How are traits passed from parents to offspring?
Through genes in DNA
If a population increases then levels off, what likely occurred?
Carrying capacity reached
Which traits are passed on more often?
Traits that improve survival/reproduction
How can pollution affect biodiversity?
Reduces species survival
Why is feedback important in homeostasis?
It helps regulate internal conditions
Why are siblings genetically different?
Different combinations of alleles
Why are graphs useful in biology?
Show patterns/relationships
Does an individual evolve? Explain.
No, populations evolve
What happens when an ecosystem is disrupted?
Balance is lost
Explain how sweating is a negative feedback mechanism.
Body temp rises → sweating cools body → restores balance
What is a mutation and why can it matter?
Change in DNA; can affect traits
A fluctuating population may indicate what?
Changing environmental conditions
Why doesn’t every organism survive?
Competition, environmental pressures
Explain one long-term effect of human impact.
Extinction, climate change