According to the Doppler effect, the sound of a police car siren is and pitched as it approaches the observer.

Are there more producers or consumers in and ecosystem? Why?

Which of Athena's traits is responsible for her status as the patron goddess of Athens? A. she was a goddess of war. B. she was a goddess of wisdom. C. she was the protector of the city of Athens. D. she was the leader of the gods.

How are ultralviolet rays filtered or blocked by our atmosphere?

Thousands of farms are located along the Mississippi River and its tributaries through the central U. S. As water washes into the river after a heavy rain, it brings with it nutrients from fertilizers added to farmland.

Distinct threadlike strutures containing genetic informatiom are called

What is the energy of a photon first used to do in photosynthesis?

Select the correct statement regarding chemical synapses. A) Cells with gap junctions use chemical synapses. B) The release of neurotransmitter molecules gives cells the property of being electrically coupled.

How can speciation of plants benefit humans

Is cellulose a fat, carbohydrate or protien

I mineral must be formed by a manufactured process to be considered a mineral. T or F