Answer:
A, C and D are photosynthetic. They are green stained suggesting the presence of chloroplast and has multiple mitochondria for energy production
It is there in case a circuit may not work or water may have entered the circuit they can reset or cut off the switch to get rid of the water.
Answer:
Ideally, the experimental and control groups are identical. As much as possible, the two groups should overlap in every characteristic.
Explanation:
At the beginning of your study, you need your two groups to be as statistically similar as is humanly possible. That way, when you control for other variables, you can reasonably attribute any statistically significant differences at the end of the study to your intervention.
Answer:
It is a trait or characteristics of yours most recent ancestor or a lineage of organisms that has evolved after separating from another lineages.