UNDERSTANDIN G LIFE SYSTEMS WHAT IS AN ECOSYSTEM

UNDERSTANDIN G LIFE SYSTEMS

WHAT IS AN ECOSYSTEM?

WHAT’S IN AN ECOSYSTEM?

ECOSYSTEMS ARE… SYSTEMS WHERE LIVING ORGANISMS INTERACT WITH THEIR NON-LIVING ENVIRONMENT

ABIOTIC VS BIOTIC WHAT’S THE DIFFERENCE?

ABIOTIC VS BIOTIC ABIOTIC = NON-LIVING BIOTIC = LIVING

ECOSYSTEMS ARE… SYSTEMS WHERE LIVING ORGANISMS INTERACT WITH THEIR NON-LIVING ENVIRONMENT

ECOSYSTEMS ARE… SYSTEMS WHERE BIOTIC ORGANISMS INTERACT WITH THEIR ABIOTIC ENVIRONMENT

ECOSYSTEMS + HUMANS ECOSYSTEMS ARE CONSTANTLY CHANGING • THESE CHANGES TO ECOSYSTEMS CAN BE CAUSED BY NATURE OR BY HUMAN INTERVENTION HUMAN ACTIVITIES CAN ALTER THE ENVIRONMENT • HUMANS MUST BE AWARE OF THEIR IMPACT AND MUST TRY TO CONTROL IT

POSSIBLE ACTIVITIES FOR THIS UNIT 1. A CHANCE TO INVESTIGATE AN ECOSYSTEM (OUTDOORS) 2. A CHANCE TO DESIGN AND CONSTRUCT A MODEL ECOSYSTEM

BEFORE WE TALK ABOUT CELLS, LET’S TALK ABOUT LIVING THINGS HOW DO YOU KNOW IF SOMETHING IS LIVING?

LIVING (BIOTIC) THINGS… • REQUIRE ENERGY (EX: FOOD FOR HUMANS) • GROW AND DEVELOP • RESPOND TO THEIR SURROUNDINGS • HAVE ADAPTATIONS TO SURVIVE • PRODUCE WASTE • ARE MADE OF CELLS • ETC. . .

WHAT ARE CELLS? WHAT IS CELL THEORY?

CELL THEORY 1. CELLS ARE THE BASIC UNIT OF LIFE. 2. ALL LIVING ORGANISMS ARE COMPOSED OF ONE OR MORE CELLS. 3. NEW CELLS COME FROM PRE-EXISTING CELLS.

Onion under a microscope - Onion Cells

Cells in different stages of division, creating new cells

ORGANELLES CELLS TISSUES ORGAN SYSTEMS ORGANISMS

ORGANELLES CELLS TISSUES ORGAN SYSTEMS ORGANISMS

POSSIBLE ACTIVITIES FOR THIS UNIT 1. A CHANCE TO INVESTIGATE CELLS UNDER A MICROSCOPE 2. A CHANCE TO DESIGN AND CONSTRUCT A MODEL CELL