Over a million students use our free study notes to help them with their homework
Osmosis is the net movement of water down the water potential gradient, through a semi permeable membrane.
rearrange the first equation so it reads y= 5x+y= 21 y=21-5xSubstitute this y value into the second equation x-3y=9 y=21-5x x-3(21-5x)=9Expand out the bracket and rearrange to find out w...
Red blood cells are highly adapted to be efficient at absorbing and storing oxygen to carry around the body to be used for aerobic respiration. There are th...
Ionic bonding describes the electrostatic forces of attraction between a metal and a non-metal ion, which are oppositely charged. For example, with NaCl, Na loses an electron to become Na+ and ...
Depending on the expression how to expand and simplify is different. Commonly for two brackets back to back these are expanded by the FOIL method. Multiply together the two first parts of the brackets, th...
←
43
44
45
46
47
→
Internet Safety
Payment Security
Cyber
Essentials
