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ionic bonding is the electrostatic attraction between oppositley charged ionsionic bonding is between metals and non metalscovalent bonding is the electrostatic attraction between positive nuclei and nega...

capillaries have a high surface area to volume ratio to allow fast diffusionCO2 can diffuse from cells to blood plasmathe lungs also contain capillaries allowing CO2 to diffuse into them prior to exhalati...

Evidence for climate change can be seen in ice cores, extreme weather events and changes in nature, such as changes in the migration pattern of birds. Ice cores are extracted from Antarctica and Greenland...

An early model which was based on a scientific idea on atomic structure was the plum pudding model. In this model, it was believed the atom was a sphere of positive charge with negatively charged electron...

Cancer is caused by the uncontrolled division of cells. If a cancer is benign, it will be a certain size and stay that size. However if it is malignant, then it will grow and get bigger in size. Eventuall...