ECOSYSTEM AND ENERGY FLOW

Components of an ecosystem

• Biotic factors: Living things in an ecosystem
• Abiotic factors: Non- things in an ecosystem
• Examples of abiotic: water, Air(oxygen/nitrogen/other gases), soil/sand, etc

STRUCTURE AND FUNCTION

• The smallest unit of organization is a single organism, which belongs to a population of any other member of its species
• Some limiting factors of population are food, space, and weather conditions.
• ->

ENERGY IN AN ECOSYSTEM

• Sunlight is the ultimate source of energy for most ecosystems
• In general, energy flows from producers to decomposes in an ecosystem.

PHOTOSYNTHESIS AND RESPIRATION

• During photosynthesis, cells capture energy from sunlight and use it to change co2 gas and water into oxygen and sugars.
• 6co2+6H2O -> C6H12O6+6O2

RESPIRATION

• During respiration, cells break down simple food molecules such as glucose and era lees the energy they contain
• C6H12O6+6O2 -> 6CO2+6H2O+ENERGY
• Cellular respiration occurs in the mitochondria of an organism's cells
• Photosynthesis and Respiration can be thought of as opposite processes

FOOD CHAIN

FOOD WEB

WATER CYCLE

• In the water cycle, water moves from bodies of water, land, and living things on Earth's surface to the atmosphere and back to the Earth's surface
• Water is essential for living things to grow, reproduce, and carry out other important processes

CARBON AND OXYGEN CYCLE

• Carbon dioxide gas is released as a waste product of respiration

NITROGEN CYCLE

• In the Nitrogen cycle, nitrogen moves from the air to the soil, into living things, and back into the air