Q: What type of metal is a good conductor of electricity? Read this paragraph and choose the correct option from the provided answers: Copper is a good conductor of electricity. That's why electric wires are often made of copper. They are covered with a protective coating of plastic, which does not conduct electricity. Choices: - Tin - Aluminium - zinc - copper A:
copper

Q: Altitude is height above what? Read this paragraph and choose the correct option from the provided answers: Altitude is height above sea level. The density of air decreases with height. There are two reasons. At higher altitudes, there is less air pushing down from above. Also, gravity is weaker farther from Earth's center. So at higher altitudes, air molecules can spread out more. Air density decreases. You can see this in Figure below . Choices: - the earth's core - the earth's surface - the water table - sea level A:
sea level

Q: Q: Light-weight air-filled bones and a large four-chambered heart helps a bird do what? Read this paragraph and choose the correct option from the provided answers: Bird organ systems are adapted for flight. For example, they have light-weight air-filled bones and a large four-chambered heart. Choices: - swim - digest - run - fly A:
A: fly

Question: Q: The kidneys help control acid-base balance by excreting _____ and generating bicarbonate that helps maintain blood plasma ph within a normal range? Read this paragraph and choose the correct option from the provided answers: Buffer Systems in the Body The buffer systems in the human body are extremely efficient, and different systems work at different rates. It takes only seconds for the chemical buffers in the blood to make adjustments to pH. The respiratory tract can adjust the blood pH upward in minutes by exhaling CO2 from the body. The renal system can also adjust blood pH through the excretion of hydrogen ions (H+) and the conservation of bicarbonate, but this process takes hours to days to have an effect. The buffer systems functioning in blood plasma include plasma proteins, phosphate, and bicarbonate and carbonic acid buffers. The kidneys help control acid-base balance by excreting hydrogen ions and generating bicarbonate that helps maintain blood plasma pH within a normal range. Protein buffer systems work predominantly inside cells. Choices: - magnesium ions - sodium ions - lithium ions - hydrogen ions A:
Answer: hydrogen ions

*Question*
Q: Frogs and toads have long back legs which are specialized for what action? Read this paragraph and choose the correct option from the provided answers: Frogs The frog order also includes toads. Unlike other amphibians, frogs and toads lack a tail by adulthood. Their back legs are also longer because they are specialized for jumping. Frogs can jump as far as 20 times their body length. That's like you jumping more than the length of a basketball court! red-eyed tree frog. Choices: - flying - swimming - sprinting - jumping A:
**Answer**
jumping

(Question)
Q: What is it called when individual organisms work together with one another? Read this paragraph and choose the correct option from the provided answers: Bees and other social animals must cooperate to live together successfully. Cooperation means working together with others. Members of the group may cooperate by dividing up tasks, defending each other, and sharing food. The ants in Figure below are sharing food. One ant is transferring food directly from its mouth to the mouth of another colony member. Choices: - continuation - competition - dualism - cooperation A:
(Answer)
cooperation