Ques: Q: What do a river and all its tributaries make up? Read this paragraph and choose the correct option from the provided answers: Small streams often flow into bigger streams or rivers. The small streams are called tributaries. A river and all its tributaries make up a river system. Choices: - abundance system - water system - food system - river system A:
Ans: river system

Ques: Q: Which type of glaciers form several unique features through erosion, including cirques, aretes, and horns? Read this paragraph and choose the correct option from the provided answers: Glaciers cause erosion by plucking and abrasion. Valley glaciers form several unique features through erosion, including cirques, aretes, and horns. Choices: - line glaciers - deep glaciers - icebergs - valley glaciers A:
Ans: valley glaciers

Ques: Q: The populations that live in the same area form this? Read this paragraph and choose the correct option from the provided answers: All of the populations that live in the same area make up a community . The community that includes the goldfish population also includes the populations of other fish, coral and other organisms. Choices: - a colony - a habitat - a biome - a community A:
Ans: a community

Ques: Q: Proper kidney function is essential for homeostasis of what level, which in turn helps ensure the functioning of enzymes? Read this paragraph and choose the correct option from the provided answers: pH Regulation Recall that enzymes lose their three-dimensional conformation and, therefore, their function if the pH is too acidic or basic. This loss of conformation may be a consequence of the breaking of hydrogen bonds. Move the pH away from the optimum for a specific enzyme and you may severely hamper its function throughout the body, including hormone binding, central nervous system signaling, or myocardial contraction. Proper kidney function is essential for pH homeostasis. Choices: - oxygen - calcium - ions - ph A:
Ans:
ph