Answer the following question given this paragraph:   Weather stations contain many instruments for measuring weather conditions. The weather balloon ( Figure above ) will rise into the atmosphere until it bursts. As it rises, it will gather weather data and send it to the surface. Many weather satellites orbit Earth. They constantly collect and transmit weather data from high above the surface. A radar device sends out radio waves in all directions. The waves bounce off water in the atmosphere and then return to the sender. The radar data shows where precipitation is falling. It’s raining in the orange-shaded area shown above.   Q: When do weather balloons return to earth?   Choices:  - when the air heats up  - when the timer runs out  - when the air cools  - when it bursts  A:
when it bursts
------
Answer the following question given this paragraph:   The simplest organic compounds are hydrocarbons and are composed of carbon and hydrogen.   Q: What two element makes up a hyrdocarbon?   Choices:  - nitrogen and carbon  - hydrogen and carbonite  - helium and carbon  - carbon and hydrogen  A:
carbon and hydrogen
------
Answer the following question given this paragraph:   A carrier protein is a transport protein that is specific for an ion, molecule, or group of substances. Carrier proteins "carry" the ion or molecule across the membrane by changing shape after the binding of the ion or molecule. Carrier proteins are involved in passive and active transport. A model of a channel protein and carrier proteins is shown in Figure below .   Q: Where do carrier proteins carry ions or molecules?   Choices:  - between nuclei  - across isotopes  - back to nucleus  - across the membrane  A:
across the membrane
------
Answer the following question given this paragraph:      Q: What evolutionary concept characterizes a species by body shape and other structural features?   Choices:  - geologic species concept  - spontaneous evolution theory  - primary speciation  - morphological species concept  A:
