Preview biological and earth sciences: microbes, ecosystems, light, moon phases, and climate change.
Lunar Calendars
Isn't it fascinating that the calendars determining our daily routines on Earth are linked to objects far beyond our planet? Early humans actually created the first calendars by watching the periodic cycles of the Moon's phases!
Reflection, refraction, and Moon phases.
We see objects around us because light rays reflect off them and enter our eyes. Think of a shiny metal spoon or a polished flat mirror—they reflect light to form images you can clearly see!
Ecosystems, microbes, and Earth's conditions.
Earth hosts complex, marvellous patterns of relationships between living organisms and their environments. From the tiniest insect to the largest whale, every living being depends on air, water, and sunlight to form functional ecosystems.
Illustration of Earth's habitable traits.
Earth's 'just right' distance from the sun, liquid water, and protective atmosphere make it the perfect home for diverse ecosystems.
The word Goldilocks describes something that isjust right—an optimal state that avoids extremes
Highlighting climate change and scientific responsibility.
Human activities can cause small changes in Earth's temperature, disrupting climate patterns with dangerous consequences. While we are the ones influencing Earth's climate, we are also the ones who can—and must—use science to understand and protect our delicate natural balance.
MCQ on microbes and earth conditions.
You are a biologist studying microscopic organisms in a drop of water. Which of the following best describes the dual nature of the microbes you might find, as discussed in the text?