Which quantity vector is a vector quantity

All the members of a species within an ecosystem are a

How do air quality scientists ensure the air is cleaned? What steps do they take?

You blow across the open mouth of an empty test tube and produce the fundamental standing wave of the air column inside the test tube. The speed of sound in air is 344 m/s and the test tube acts as a stopped pipe.

A horse pulls a cart along a flat road. They start from rest and as time goes on their speed increases.

A connection-oriented protocol in a packet-switched network guarantees a dedicated line - similar to how a circuit-switched network works?

Which best describes how the diagram illustrates both laws of thermodynamics? First law: High-temperature steam flows to an area of lower temperature in the turbines. Second law: Thermal energy is used to do work on the turbines.

What are four things that are cycled in the environment?

Listening to the radio, you can hear two stations at once. Describe this wave interaction

The volume of a gas is reduced when the temperature is decreased

Describe the Dark Ages of our universe.