The answer is C. Carbon Dioxide and also A) water
Plants and algae use carbon dioxide and water in presence of sunlight to perfrom photosynthesis. Oxygen is a by-product of this process and is used later by the plant for respiration.
The correct answer is Bacteria can't survive in a hypertonic solution because they lose water.
The 20-30% salt solution is hypertonic as Compared to the bacterial concentration of salt. In this case, the bacteria present in the solution would lose water. Due to excess loss of water, the bacteria would eventually shrink and die. Hence, green olives preserved in the brine would be safe from microbial attack.
Cells are the smallest unit of life
Photosynthesis can make light from the sun to energy
