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One environmental factor which has an effect on a plant is light.

The stems of a plant grow towards the light, and roots grow away from the light. 

We call ...

Animal cells have the following organelles:
A nucleus which controls the activities of the cell and stores the cell DNA; cytoplasm where most of the cell's chemical reactions take place; a cell membr...

Diffusion
Diffusion is the process in which particles/ substances spread out in a solution or a gas. The result of this process is that particles move down the concentration gradient...

There are three main reasons for this, firstly, the 1800s when Charles Darwin lived was a deeply religious time and the idea of evolution challenged the idea of God creating life on Earth. Secondly, not m...

An adaptation is a feature or characteristic that allows an organism to live and survive successfully in a habitat. 
Animals living in cold environments, such as the polar bear, may have a small surf...