Define ecosystem.
A community of living organisms and their physical environment interacting together.
True or false: Photosynthesis occurs in plants to produce energy.
TRUE
Photosynthesis converts sunlight into chemical energy in plants.
Fill in the blank: Water is essential for _______ in living organisms.
survival
What is the water cycle?
The continuous movement of water through evaporation, condensation, and precipitation.
Define habitat.
The natural environment where an organism lives and grows.
What do producers do in an ecosystem?
They create their own food through photosynthesis, like plants.
True or false: Carnivores eat only plants.
FALSE
Carnivores primarily eat other animals.
Fill in the blank: Decomposers break down _______ material.
dead
What is biodiversity?
The variety of life in a particular habitat or ecosystem.
Define pollination.
The transfer of pollen from male to female parts of flowers.
What is the role of nutrients in plants?
Nutrients support growth, development, and reproduction in plants.
True or false: Wind can be a method of seed dispersal.
TRUE
Seeds can be carried by the wind to new locations.
Fill in the blank: Fossils provide evidence of _______ life.
past
What is renewable energy?
Energy from sources that are naturally replenished, like solar or wind.
Define pollution.
The introduction of harmful substances into the environment.
What is the food chain?
A sequence showing how energy and nutrients flow between organisms.
True or false: Recycling helps reduce waste in landfills.
TRUE
Recycling reuses materials, conserving resources and energy.
Fill in the blank: Climate refers to long-term weather _______.
patterns
What is gravity?
The force that attracts objects toward each other, especially Earth.
Define matter.
Anything that has mass and takes up space.
What are states of matter?
The distinct forms that different phases of matter take: solid, liquid, gas.
True or false: Atoms are the basic units of matter.
TRUE
Atoms combine to form molecules, which make up substances.
Fill in the blank: Energy can be transformed from one form to _______.
another
What is friction?
The resistance that one surface or object encounters when moving over another.
