Pollution: Introduction and environmental control

Ecology

The study of the interactions among the organism/group of organisms with their environment

Environment components? Give examples for each

1. Biotic components: living parts

   • Plants

   • Animals

   • Microorganisms (decomposers)

2. Abiotic components: non-living parts

   • Water

   • Oxygen

   • Sunlight

   • Rocks

   • etc.

Types of abiotic components

1. Physical

   • Energy, climate, raw materials, living space

2. Chemical

   • Source for essential nutrints

Types of ecosystems

• Terrestrial ecosystem: relayed to land

• Aquatic ecosystem: related to water

  • Fresh water: running , standing

  • Marine

• Man-made/Artificial ecosystem: operated/maintained by humans

Producers (autotrophs)

• Make their own food by photosynthesis

  • All green plants and trees

Consumers (heterotrophs)

• Primary: Herbivores, consume plants

  • Insects, Rats, Goats

• Secondary: Primary carnivores, consume meat

  • Frogs, Cats, Foxes

• Tertiary: Secondary carnivores, consume the primary carnivores

  • Tigers, Lions

• Decomposer: Detritivores, consume the remains of animals

  • Fungi

Ecosystem function

To allow energy flow and recycle nutrients

Explain Energy Flow

Types of cycles

1. Water cycle

2. Carbon cycle

3. Nitrogen cycle

Types of pollution

• Noise pollution

• Soil pollution

• Radioactive pollution

• Air pollution

• Water pollution