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Guard cells open and close the stomata in a leaf. When the plant has lots of water the guard cells fill with it and become plump and turgid. This makes the stomata open so gases can be exchanged for photo...

3x + y =23, 4x +4y=5212x+4y=92, 12x+12y=1568y=64y=8sub in3x+8=23, 3x=15x=5y=8x=5

Approaching unseen poetry that you haven't been able to revise beforehand can seem daunting, but once you have a certain set of skills you'll be able to apply them to any text you come across! With practi...

English translation: I like to spend a lot of time time chatting to young people online and, sometimes, we study together. It's easier then reading books.

The Flu is caused by the Rhinovirus. Antibiotics can only kill bacteria not viruses as viruses have different machinery to survive and replicate. Antibiotics have nothing to target in Viruses. Overuse of...