(Q).
Q: What branch of science is the study of human origins? Read this paragraph and choose the correct option from the provided answers: Choices: - biology - pharmacology - palaeobiology - paleoanthropology A:
(A).
paleoanthropology

(Q).
Q: The electrolysis of what substance produces hydrogen and oxygen gases Read this paragraph and choose the correct option from the provided answers: The electrolysis of water produces hydrogen and oxygen gases. The electrolytic cell consists of a pair of platinum electrodes immersed in water containing a small amount of an electrolyte, such as H 2 SO 4 . The electrolyte is necessary because pure water does not contain enough ions to effectively conduct a current. At the anode, water is oxidized to oxygen gas and hydrogen ions. At the cathode, water is reduced to hydrogen gas and hydroxide ions. Choices: - cholesterol - carbon dioxide - hydrocarbon - water A:
(A).
water

(Q).
Q: A fish's stream-lined body that reduces water resistance is an example of what kind of response to an aquatic lifestyle? Read this paragraph and choose the correct option from the provided answers: Many structures in fish are adaptations for their aquatic lifestyle. For example, fish have a stream-lined body that reduces water resistance while swimming. Choices: - natural selection - retraction - evolution - adaptation A:
(A).
adaptation