Some molecules require the cell to use energy for movement across the membrane. This is called .

Look at the photo of the leaf. which term best describes this leaf?

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home.what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

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