Oxygen and carbon dioxide move across a cell membrane due to diffusion. Diffusion is a passive process as it requires no energy to move particles down the concentration gradient.
Energy is absorb when chemical bonds are broken and release energy when bonds are formed. The change in chemical reaction will predict whether or not the reaction occur due to the difference in the amounts of stored chemical energy between the products and reactants
Answer:
Mold fossil.
Explanation:
The clamshell shaped cavity is a mold fossil owing to the fact that the clamshell died, its body deteriorated but while it is deteriorating it is being covered by sediment. As a result when the clamshell completely disappears it will leave an impression on the sediment, in other words, it is a mold of the prehistoric clamshell.
C because bacteria doesn’t have a nucleus, dna, or cell walls
How high it is above a surface determines the gravitational potential energy.