Astudent is observing a group of cells under a microscope. what observation would her conclude that they are plant cells?

The correct answer will be-

1. The presence of cell wall

2. The presence of chloroplast

3. A large vacuole

Explanation:

Plant cell posses three unique structural feature which includes the additional cell wall, an organelle containing a green pigment called chloroplast and  

If a person has to identify the plant cell in a microscope then the person should look at these three mentioned structures-the additional cell wall, a double membrane structure and a large vacuole.

Thus, cell wall, chloroplast and the large vacuole are the correct answer.

Limestone areas are predominantly affected by chemical weathering when rainwater, which contains a weak carbonic acid, reacts with limestone. This causes the limestone to dissolve. Carbon dioxide from the respiration of animals (and ourselves) is one cause of increased carbon dioxide in the atmosphere.