You can change the state of water by adjusting temperature and pressure. Heating water turns it into steam (gas), while cooling it forms ice (solid). Reducing pressure can also facilitate evaporation and freezing.
Discussion Forum Latest Questions
Oxygen and carbon dioxide are crucial gases for life. Oxygen is essential for respiration in living organisms, while carbon dioxide is a byproduct of respiration and is used by plants during photosynthesis for growth.
The handspan is not a standard unit of measuring length. Unlike millimeters, centimeters, and kilometers, which are part of the metric system and universally accepted, the handspan varies between individuals and lacks consistent measurement criteria.
Leaves of the same tree vary in length and breadth due to factors like genetics, environmental conditions, light exposure, and water availability. These variations help optimize photosynthesis and adapt to differing microenvironments within the tree’s habitat.
At home and school, I found various measuring scales: a ruler (1 mm), a measuring tape (1 cm), a caliper (0.01 mm), and a yardstick (1 cm). Each tool offers different precision for measuring lengths and dimensions.