Passive transport is the movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input. On the other hand, active transport <span>is the movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration which needs energy input. </span>
<span>Answer: C. Time of ancient life.
Paleozoic comes from Greek word palaios which means "old" or "ancient", and zoe which means "life".
it could be translated as "</span>Time of ancient life". The range of Paleozoic era is from <span>541 to 251 million years ago that could be divided into 6 smaller periods.</span>
Guessing it’s D. Hope this was helpful!
The marble is release from the top of the ramp.Gravitational potential energy decreases as it roll down the ramp,at the same time the marble gains kinetic energy as well as a lost of energy in the form of heat due to friction.
Chenge in PE=change in KE
therefore energy remains the same on all parts of the ramp
A gene is changed to cause plants to be more drought resistant
