Define the terms.
i. Stimuli ii. Habitat

Stimuli: A stimulus is any detectable change in the internal or external environment, capable of eliciting a response in the organism.

Habitat:

The natural home or environment of an animal, plant, or other organism.

Or,

A habitat is a place where an organism makes its home.

"griffith's experiment discovering the "transforming principle" in pneumococcus bacteria. griffith's experiment, reported in 1928 by frederick griffith, was the first experiment suggesting that bacteria are capable of transferring genetic information through a process known as transformation." - griffith's experiment.