He was one of the first people to suggest that organisms changed in accordance with natural laws.

One is that these organisms somehow change muscle cells to make them appear foreign to the patient's immune system.

So the structural organism changed as described below.

This is when organisms change in ways that help them to survive and reproduce.

Evolving organisms inevitably change the environment they evolve in.

It is an incontrovertible fact that organisms have changed, or evolved, during the history of life on Earth.

Indeed, Darwin did more than merely demonstrate that the world's organisms are changing.

And field scientists have been able to use the fossil record to answer important questions about natural selection and how organisms change over time.

Digestion is the way that an organism changes a substance into nutrients.

They also accept that organisms change over time, according to commonly held principles of evolution.