The largest portion of the brain, which is commonly referred to as the "gray matter," is called the:

The human ear can hear sounds between 20 Hz and 16,000 Hz. If the speed of sound is about 340.29 m/s, what is the shortest wavelength the human ear can hear?

Matching: Match each description with the correct term. A. active transport B facilitated diffusion C. diffusion D. osmosis E. exocytosis 1. The movement of molecules from an area of HIGH concentration to an area of LOW concentration. 2.

In the United States, most histoplasmosis cases occur in the Pacific northwest. in the desert southwest. in the Mississippi river valley. in Colorado river valley.

Which statement correctly describes the circulatory system? A) Blood leaves the heart via the atrium. B) Blood travels away from the heart in the pulmonary vein. C) Blood travels back to the heart in the aorta.

Oceans influence global weather patterns by mixing cool water with warm surface water A. causing the land near the coasts to be colder all year B. causing the land near the coasts to have a more C. constant temperature all year D.

Air pollution is caused by A. natural events and human activities. B. human activities but not natural events. C. heavy rainfall. D. the sun.

Which of the following can increase the growth of algae when it enters streams? A) insecticide B) herbicide C) carbon dioxide D) oil

Which are the best examples of types of molecules used for energy storage by organisms? Choose all answers that are correct. A. lipids B. proteins C. nucleic acids D. carbohydrates

Tell me five different invasive species

How much energy is produced by each type of macromolecule