If a cell was observed under the microscope and found to have a rigid cell wall and be green in color the cell is most likely a

Which one of the following statements about the troposphere is true? Select one: a. The troposphere is the atmospheric layer farthest from the earth's surface. b. The tropospheric gases move because of convection currents. c.

A particular plant species is pollinated by a certain insect species. The insect species depends on the plant species for food.

Over 60% of earths surface is found where

Both viruses and living cells can cause intestinal diseases. Giardia Lambía is a single called organism that releases toxins that cause diarrhea and vomiting. A norovirus is a common cause of viral gastroenteritis, which has similar symptoms.

Although fertilizers have been very important in increasing the food supply, there have also been negative effects from the overuse of fertilizers. How can the overuse of fertilizers kill crop plants? A. It can cause salts to build up in the soil. B.

A group of scientists decided to post their research results on the Internet instead of publishing in a scientific journal. What part of the scientific process have they skipped and why does it matter?

How does the structure of DNA allow it to complete the process of replication?

Which of the four types of organic compounds serve as an energy source for cells?

What clean water regulation do you think has had the greatest impact on water quality in the United States? In a 3-5 sentences, explain and justify your opinion.

Select the five variations of the light microscope the electron microscope the dark field microscope the phase contrast microscope the fluorescence microscope the polarizing light microscope the bright field microscope