Answer the following question given this paragraph: Zinc is an important component of many kinds of batteries. This metal is mined as zinc compounds, one of which is zinc carbonate. To obtain the pure metal, the ore must go through the following chemical processes:. Q: What are the two main components in a battery? Choices: - filter and a cathode - vortex and a cathode - anode and a vortex - anode and a cathode A:
anode and a cathode
(Question)
Answer the following question given this paragraph: Pahoehoe lava is thinner than a'a, and flows more readily. Its surface looks more wrinkly and smooth. Pahoehoe lava flows in a series of lobes that form strange twisted shapes and natural rock sculptures ( Figure below ). Pahoehoe lava can form lava tubes. The outer layer of the lava flow cools and solidifies. The inner part of the flow remains fluid. The fluid lava flows through and leaves behind a tube ( Figure below ). Q: What type of thin lava forms shapes and tubes as it flows? Choices: - spicule - xeric - xerophyte - pahoehoe A:
(Answer)
pahoehoe
Ques: Answer the following question given this paragraph: Telescopes on Earth all have one big problem: incoming light must pass through the atmosphere. This blocks some wavelengths of radiation. Also, motion in the atmosphere distorts light. You see this when you see stars twinkling in the night sky. Many observatories are built on high mountains. There is less air above the telescope, so there is less interference from the atmosphere. Space telescopes avoid problems from the atmosphere completely since they orbit outside the atmosphere. Q: Many observatories are built on high mountains to avoid interference from what? Choices: - airplanes - artificial light - animal life - the atmosphere A:
Ans: the atmosphere
(Q).
Answer the following question given this paragraph: Water also gets colder as you go deeper. The weight of the water pressing down from above increases as well. At great depths, life becomes very difficult. The pressure is so great that only specially adapted creatures can live there. Q: Does water get colder or warmer the deeper you go? Choices: - colder, than warmer - neither - warmer - colder A:
(A).
colder
Ques:Answer the following question given this paragraph: The oldest animal fossils are about 630 million years old. The earliest animals were aquatic invertebrates. The first vertebrates evolved around 550 million years ago. By 500 million years ago, most modern phyla of animals had evolved. Q: What type of invertebrates where the earliest animals? Choices: - cnidaria - arachnids - annelids - aquatic invertebrates A:

Ans:aquatic invertebrates
Answer the following question given this paragraph: 29.3 Amphibians As tetrapods, most amphibians are characterized by four well-developed limbs, although some species of salamanders and all caecilians are limbless. The most important characteristic of extant amphibians is a moist, permeable skin used for cutaneous respiration. The fossil record provides evidence of amphibian species, now extinct, that arose over 400 million years ago as the first tetrapods. Amphibia can be divided into three clades: salamanders (Urodela), frogs (Anura), and caecilians (Apoda). The life cycle of frogs, like the majority of amphibians, consists of two distinct stages: the larval stage and metamorphosis to an adult stage. Some species in all orders bypass a free-living larval stage. Q: The most important characteristic of extant amphibians is a moist, permeable skin used for this? Choices: - benign respiration - simple respiration - avian respiration - cutaneous respiration A:
cutaneous respiration