Biological detergents contain protease enzymes. Figure 4 shows some apparatus and materials.
Describe how you would use the apparatus and materials shown in Figure 4 to find the
best temperature for removing stains from clothing.
You should include how you would make the investigation a fair test.

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

voluntary muscles are controlled by the cerebellum.