World Regions Chapter 3 Section 3 and 4

Which species, first seen on the island of Mauritus in 1507, is now extinct?

• dodo bird

• Mountain Lion

• wolves

• hawks

what is the definfition of environment?

Why is soil important to human life?

• soil supports plant life, which is where humans get much of their food.

• diverse habitats are being lost

• all plants and animals are adapted to specific areas

What are the three layers of soil?

• Topsoil, subsoil, and broken rocks

• solid rocks, subsoil and desertification

• desertification, humus, and topsoil

what is an ecosystem?

• a group of plants and animals that depend one ach other for survival and the environment in which they live

• surroundings

• is the plant where a plant or animal lives

• to the spread of desertlike conditions

Why can plants and animals not live elsewhere?

• clearing of land

• Soils determine which plants can grow

• They are adapted to specific environments

Is a soil nonrenewable or renewable resource?

• nonrenewable resource

• renewable resource

what is reforestation?

• planting new trees in places where forests have been lost

• clearing of land

• is any materials in nature that people use and value

what are some nonrenewable energy resources

• coal, natural gas, petroleum or oil, all of the fossil fuels

• trees, soil, water, food, gas

• minerals such as salt, rocks, metals, and gemstones

The source of energy for most living things is

• water

• sunlight

• humus

• topsoil