CW/HW: 10.1 Human Population Exponential Growth

This graph shows human population growth over time. What is the best way to describe this growth?

• Linear because it is increasing at a constant rate.

• Quadratic because it increases and then decreases in the shape of a parabola.

• Exponential because it increases rapidly.

Select a reason why human population is increasing exponentially/rapidly.

• Industrialization (more cities and factories so more people have access to clean water and food)

• Medicine

• Pollution

• Invasive Species

A function of white blood cells is to

• transport oxygen to body cells

• produce hormones that regulate cell communication

• carry glucose to body cells

• protect the body against pathogens

Vaccinations help prepare the body to fight invasions of a specific pathogen by

• inhibiting antigen production

• stimulating antibody production

• inhibiting white blood cell production

• stimulating red blood cell production

What is a negative effect of human population increasing exponentially?

• pollution

• recycling

• medicine

What is a negative effect of human population increasing exponentially?

• endangered species

• recycling

• medicine

If an endangered species goes extinct, what is the effect is can have on the ecosystem?

• It decreases biodiversity, which can decrease the ecosystem stability.

• It increases biodiversity, which can decrease the ecosystem stability.

• It decreases biodiversity, which can increase the ecosystem stability.

• It increases biodiversity, which can increase the ecosystem stability.

State the relationship between human population growth and species extinction.

• If the human population increases, then species extinction increases.

• As the human population increases, species extinction increases.

• If the human population increases, then species extinction decreases.

• As the human population increases, species extinction decreases.

Which long term change could directly cause the other three?

• pollution of air and water

• scarcity of animal habitats

• increasing human population

• depletion of resources

Which concept is best represented in the diagram shown below?

• Human actions are a threat to equilibrium in ecosystems.

• Equilibrium in ecosystems requires that humans modify ecosystems.

• Equilibrium in ecosystems directly affects how humans modify ecosystems.