Science question, struggling need help asap

Photosynthesis is a process in which food is produced in the presence of sunlight when carbondioxode and water react with each other. Photosynthesis occurs in the chloroplast of the leaves. The products of photosynthesis are oxygen and glucose.

Respiration is a process in which energy is released due to the breakdown of glucose molecules with the addition of oxygen. Respiration occurs in the mitochondria of the cell. The products of respiration are water, carbondioxide and energy in the form of adenine tri phosphate (ATP).

Euglena is a unicellular organisms which has the ability to make their own food like plants in the presence of sunlight during the process of photosynthesis. Food production in both euglena and plants requires sunlight. Without sunlight, food is not produced.

typically, most spiders possess eight eyes. however, others have as many as 12, and some don't have any. these eyes are for detecting light from dark, deciphering shapes and for gathering their prey.

the sphincter muscles at the end of the digestive tract is the anus.