Mrs.Taylor's: Mighty 3: November 2018

STRONG AND STABLE STRUCTURES

Animal Built Structures

Animal built structures look different from structures built by humans. Animals that build structure include mammals, bird, and insects. Animals build structures for 3 reasons:

1. To catch prey

2. To have a protected home

3. To communicate with other animals of the same species

Examples of animal built structures: Wasp Nests, Bird Nests, Beaver Dams, Spider Webs, etc.

Animal built structures are strong and stable. They use different materials from nature to make their structures. They use materials like mud, stone, branches, grass, dead wood, plant stems and leaves to make strong structures. They make their structures stable by using materials like spider silk, cocoon silk, or hard mud to keep their structure in one place.

Animal built structures can impact the environment by:
1. Animal use resources provided by other livings things to help build their nests.
2. Animals could destroy other living things by taking resources to build structures.
2. Beaver dams could flood the environments because the dams block off water supply.

Human Built Structures

Man-made structures provide humans with - shelter, transportation and entertainment. They can bring money to the economy, for example, a shopping mall.

Humans also use different materials to build structures. Some materials that humans use to build structures are wood, metals, bricks, concrete, glass and plastic.

Human built structures can impact the environment in different ways:
1. When a structure is built, the land that it is built on can be destroyed.
2. Animal homes may be destroyed.
3. Living organisms that live around the land can be harmed.
4. Trucks that transport materials can pollute the air.
5. Building the structure can also use a lot of energy from factories that can pollute the air.

Strength and Stability

We know that to make a structure more strong and stable we can...