Human population growth

Human population growth In the United States and developed

countries, the current growth rate is ________

Human population growth In the United States and developed

countries, the current growth rate is very low

Human population growth In the United States and developed

countries, the current growth rate is very low

In some developing countries, the human population growth is nearly _______

Human population growth In the United States and developed

countries, the current growth rate is very low

In some developing countries, the human population growth is nearly 3 people per second

Human population growth• In some developing countries, the

human population growth is nearly 3 people per second

• Because of this, the human population is well on its way to reaching ____________ in your lifetime

Human population growth• In some developing countries, the

human population growth is nearly 3 people per second

• Because of this, the human population is well on its way to reaching 9 billion in your lifetime

Human population growth

Human population growth For most of human existence, the

population grew ______

Human population growth

Agriculturebegins Plowing

And irrigation

Bubonicplague

IndustrialRevolution begins

Human population growth For most of human existence, the

population grew slowly

Human population growth

Agriculturebegins Plowing

And irrigation

Bubonicplague

IndustrialRevolution begins

Human population growth About 500 years ago, the population

began growing more rapidly because life was made easier by advances in _______ , ______ , and _______.

Human population growth

Agriculturebegins Plowing

And irrigation

Bubonicplague

IndustrialRevolution begins

Human population growth About 500 years ago, the population

began growing more rapidly because life was made easier by advances in agriculture, industry, and medicine

Human population growth

Agriculturebegins Plowing

And irrigation

Bubonicplague

IndustrialRevolution begins

Human population growth With these advances, the human

population experienced ____________

Human population growth

Agriculturebegins Plowing

And irrigation

Bubonicplague

IndustrialRevolution begins

Human population growth With these advances, the human

population experienced exponential growth

Human population growth

Agriculturebegins Plowing

And irrigation

Bubonicplague

IndustrialRevolution begins

Human population growth Human population cannot keep growing

exponentially forever because

Human population growth

Agriculturebegins Plowing

And irrigation

Bubonicplague

IndustrialRevolution begins

Human population growth Human population cannot keep growing

exponentially forever because Earth and its resources are limited.

Human population growth

Agriculturebegins Plowing

And irrigation

Bubonicplague

IndustrialRevolution begins

Human population growth

nonrenewable resources -

nonrenewable resources – resources that are used faster than they are formed. Examples -

nonrenewable resources – resources that are used faster than they are formed. Examples – oil, coal, natural gas

renewable resources -

renewable resources – resources that cannot be used up or can be replenished over time faster than they are used up examples -

renewable resources – resources that cannot be used up or can be replenished over time faster than they are used up examples – wind energy, solar energy,

drinking water, lumber/paper

ecological footprint -

ecological footprint – the amount of land necessary to produce and maintain enough food and water, shelter, energy and waste

ecological footprint – the amount of land necessary to produce and maintain enough food and water, shelter, energy and waste

The size of an ecological footprint depends on a number of factors

ecological footprint – the amount of land necessary to produce and maintain enough food and water, shelter, energy and waste

The size of an ecological footprint depends on a number of factors amount and efficiency of resource use Amount and toxicity of waste produced

The average U.S. citizen’s ecological footprint covers an area larger than

The average U.S. citizen’s ecological footprint covers an area larger than 24 football fields.

The average U.S. citizen’s ecological footprint covers an area larger than 24 football fields.