The case of a plant having nitrogen-fixing bacteria in its roots is an example of:

endosymbiosis

parasitism

mutualism

none of these

Which one of the following is NOT a cause of anemia? a diet lacking in iron and certain vitamins germs from someone with anemia inherited problems relating to red blood cells loss of a large amount of blood

Most of Earth's useable chemical energy came to earth as solar energy but has been stored as?

How was Aristarchus's explanation of the movement of objects in the sky different from other scientists' earlier explanations? Check all that apply.

What is a property of soil that determines how water will soak through the ground? A. Capillary action B. Permeability C. Gravity D. Aquifer

Which clue indicates that a speciation has occurred between two populations? A. Renaming of a population has been complete by scientists. B. Two different looking individuals are within the same population. C.

Why is forecasting human population growth more difficult than forecasting population growth in other animals?

You and your physiology instructor are trapped in an overturned ship. To escape, you must swim underwater a long distance. You tell your instructor it would be a good idea to hyperventilate before making the escape attempt.

Thermal vents are found at the bottom of the ocean in the benthic zone.

What is a transitional fossil? what is a transitional fossil? a transitional fossil is in the middle of a direct lineage stretching from ancient forms to organisms alive today. transitional fossils were poorly adapted to their environments.

Explain the processes involving mitosis