Answer:
It helps the cactus live a long time between rainstorms.
Explanation:
A thick, waxy coating keeps the water inside the cactus from evaporating.
Answer:
A.) He should total the votes for each of the options and plot these five values in a chart.
Explanation:
It gives you a sign that digestion is having a hard time taking place.
Answer:
Actin filaments return to their original positions (does not occur in muscle contraction, according to the sliding filament model).
Explanation: