What should be changed to make the following sentence true? "a theta wave is a very high amplitude pattern of brain activity that may in some cases occur in response to environmental stimuli."

The words "theta wave" should be changed to the phrase "K-complex."

Explanation:

Complex K is a type of where related to slow wave sleep. The k complex is a group of high amplitude waves that can occur spontaneously or relate to awakening relationships. That is, the K Complex is a very high amplitude pattern of brain activity that can, in some cases, occur in response to environmental stimuli.

On the other hand, Wave Theta is the state of mind where it is believed that you can create everything and change reality instantly.

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.