The huge redwood trees in oregon continue to grow tall by

Primary growth.

Explanation:

Most of the primary growth occurs at the tips, apices of the stem and roots. It results in the growth of plant in height.

This is caused as a result of rapidly-dividing cells  that lies in the apical meristem at the root and shoot tip of the plant.

This growth enables the plant to absorb water from the roots and sunlight at the shoots in order to grow.

here, the redwood trees in Oregon continue to grow tall by conducting the primary growth.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms

b. to discover aspects of the natural world.

hopefully i .