What is true of all ecosystems? The amount of mass and energy cycles through and remains the same
.B. The amount of mass always increases, while energy always decreases.
C. The amount of mass and energy only decreases.
D. The amount of mass and energy only increases.

answer; (phospholipid);

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?