Plz help will mark brainliest if correct answer only to which three stimuli do plants respond

Free brainliest! what is a characteistic of the american stradfordshire?

Aplant may open end close its stomata to prevent excess water loss and maintain

Abird flies by moving its wings up and down. which two systems are most directly responsible for the movement of a bird's wings? a. skeletal and muscular systems b. respiratory and muscular systems c. skeletal and digestive systems d. respiratory and digestive systems