Velocity is a measure of how fast something moves in a particular direction. In other words, a velocity is a speed with a direction. For instance, if an object moves east at 9 metres per second (9m/s), we would say that its velocity is 9 m/s to the east.
Gradient The formal definition of a concentration gradient is the process of particles, which are sometimes called solutes, moving through a solution or gas from an area with a higher number of particles to an area with a lower number of particles. The areas are typically separated by a membrane.
They both believed that plants (Schleiden) and animals (Schwann) were composed of the same basic structure, providing further support for the cell theory.
Answer would be "C" Only animals are composed of cells
Answer:
Energy is used up while running, and cellular respiration needs oxygen to produce more energy. Energy is used up while running, and cellular respiration needs carbon dioxide to produce more energy.
Explanation:
I'm pretty sure it's answer D. It's the only answer choice that really makes sense.
