Answer:
C. pioneer species begin the process of succession
Explanation:
It would be difficult to find the ideal CO2 level with a low light intensity because the plant will have a difficult time trying to survive.
Animal cells communicate via their extracellular matrices and are connected to each other via tight junctions, desmosomes, and gap junctions
Answer:
C. Glucose and oxygen
Explanation:
Photosynthesis takes water, carbon dioxide, and light energy and turns it into cellular energy (glucose) and converts the carbon dioxide into oxygen. Plants are so vital to human life due to this process as they produce both the energy we need and air we breathe to survive.