1. Diffusion is the movement of across a membrane. 2. Osmosis is the diffusion of across a membrane. 3. Define selectively permeable: 4. Explain the following terms in your own words: a) concentration gradient – b) equilibrium –

During a hot day, warm and moist air rises and cools in the atmosphere. which even would occur next on such a day? a. condensed droplets would gather to become water vapor. b. water vapor would condense into tiny droplets. c. water droplets would evaporate to form rain and snow.

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?

Ascientific idea becomes valid when it is what?