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When heating a substance, the particles gain energy. As you heat a solid, it eventually changes to a liquid and if you continue to add more heat, it will eventually turn into a gas. When a solid turns int...

Respiration isn’t just breathing: it is the conversion of glucose into energy through a series of reactions in every cell. It provides energy for movement, warmth, and to build molecules up from smaller m...

Atoms are small particles that make up everything.  If you picture an object made up from mini-footballs then that's what the atoms look like that make up the object just on a much, much smaller scale....

Examples of physiological problems and the adaptations of plants: 

1. Body support. As organisms in water face lower pressure than in air, algae did not need to have composite body part...

Osmosis is basically the movement of water across a semi-permeable barrier (i.e. a barrier that lets some molecules through but not others - like a cell membrane). Usually, the water m...