Answer:
light
Explanation:
The above experiment is an investigation on the factors that affect photosynthesis which include carbon dioxide concentration,light intensity and quality,chlorophyll, water and temperature.Light was the independent variable. When the lant is moved to an area where light intensity is low, the rate of photosynthesis decreases.
After the experiment, oxygen gas is produced being a by-product of photosynthesis. Plants that are not adapted to an aquatic environment are not suitable for this experiment. The amount of carbon dioxide dissolved in water is low.
The answer to the question is A
D because they are complete systems
Answer:
The organ is the female reproductive organ , the uterus
and the green arrow points to the cervix
Cell theory was fdiscovered in the 17th century. but the first. cell theory was credited in the 19th century.